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INORGANIC CHEMISTRY (45 journals)

Showing 1 - 36 of 36 Journals sorted alphabetically
Acta Polymerica     Hybrid Journal   (Followers: 9)
Additives for Polymers     Full-text available via subscription   (Followers: 20)
Advances in Inorganic Chemistry     Full-text available via subscription   (Followers: 10)
Advances in Polymer Technology     Open Access   (Followers: 13)
Annual Reports Section A (Inorganic Chemistry)     Full-text available via subscription   (Followers: 5)
Bioinorganic Chemistry and Applications     Open Access   (Followers: 5)
Comments on Inorganic Chemistry: A Journal of Critical Discussion of the Current Literature     Hybrid Journal   (Followers: 1)
Communication in Inorganic Synthesis     Open Access  
European Journal of Inorganic Chemistry     Hybrid Journal   (Followers: 11)
European Polymer Journal     Hybrid Journal   (Followers: 43)
High Performance Polymers     Hybrid Journal   (Followers: 1)
Indian Journal of Chemistry - Section A     Open Access   (Followers: 9)
Inorganic and Nano-Metal Chemistry     Hybrid Journal  
Inorganic Chemistry     Hybrid Journal   (Followers: 33)
Inorganic Chemistry Communications     Hybrid Journal   (Followers: 14)
Inorganic Chemistry Frontiers     Hybrid Journal   (Followers: 4)
Inorganic Materials     Hybrid Journal   (Followers: 6)
Inorganic Materials: Applied Research     Hybrid Journal   (Followers: 1)
Inorganica Chimica Acta     Hybrid Journal   (Followers: 6)
Inorganics     Open Access   (Followers: 1)
International Journal of Bio-Inorganic Hybrid Nanomaterials     Open Access   (Followers: 5)
International Journal of Inorganic Chemistry     Open Access   (Followers: 3)
JBIC Journal of Biological Inorganic Chemistry     Hybrid Journal   (Followers: 2)
Journal of Inorganic and Organometallic Polymers and Materials     Hybrid Journal   (Followers: 8)
Journal of Inorganic Biochemistry     Hybrid Journal   (Followers: 3)
Journal of Inorganic Chemistry     Open Access   (Followers: 4)
Journal of Polymers and the Environment     Hybrid Journal   (Followers: 1)
Journal of Progressive Research in Chemistry     Open Access   (Followers: 2)
Journal of Separation Science     Hybrid Journal   (Followers: 5)
Materials Today Chemistry     Hybrid Journal   (Followers: 2)
Open Journal of Inorganic Chemistry     Open Access   (Followers: 1)
Polymer Bulletin     Hybrid Journal   (Followers: 8)
Polymer Composites     Hybrid Journal   (Followers: 17)
Russian Journal of Inorganic Chemistry     Hybrid Journal  
Separation Science plus (SSC plus)     Hybrid Journal   (Followers: 1)
Zeitschrift für anorganische und allgemeine Chemie     Hybrid Journal   (Followers: 1)
Similar Journals
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High Performance Polymers
Journal Prestige (SJR): 0.332
Citation Impact (citeScore): 1
Number of Followers: 1  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0954-0083 - ISSN (Online) 1361-6412
Published by Sage Publications Homepage  [1176 journals]
  • Bio-based flame retardants containing biphenyl structure for
           simultaneously enhancing mechanical properties and fire safety of epoxy
           resins

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      Authors: Bin Ren, Chenchen Wang, Rui Ma, Ying Huang, Xiuyun Li
      Abstract: High Performance Polymers, Ahead of Print.
      A reactive flame retardant containing biphenyl structure (DEU-2DOPO) was prepared from the bio-based raw material eugenol. The incorporation of DEU-2DOPO into the epoxy resin serves to enhance the ring-opening reaction of the epoxy. Furthermore, the inclusion of DEU-2DOPO has been found to have a positive impact on the glass transition temperature and residual carbon rate of the epoxy resin. This additive also significantly improves the mechanical properties of the epoxy resin, leading to a 49.3% increase in tensile strength, an 81.9% increase in breaking elongation, and a 15.8% increase in flexural strength. Notably, when DEU-2DOPO is introduced at a concentration of 5 wt%, it not only achieves a V-0 rating in the UL-94 test but also exhibits an impressive ultimate oxygen index of 34.5%. Additionally, the cone calorimetric testing revealed that the presence of DEU-2DOPO results in lower combustion metrics compared to pure epoxy, as evidenced by a reduction of 15.1% in total heat release (THR) and 10.8% in total smoke release (TSR). An analysis of the flame retardant mechanism elucidates that DEU-2DOPO promotes the formation of a stable and dense residual carbon, thereby impeding gas and heat exchange. Furthermore, the decomposition of DEU-2DOPO generates PO· and PO2· radicals, which effectively neutralize reactive radicals.
      Citation: High Performance Polymers
      PubDate: 2024-02-10T05:45:20Z
      DOI: 10.1177/09540083241227589
       
  • Preparation and properties of high-temperature resistant bisphthalonitrile
           resins containing trifluoromethyl groups reinforced by poly (aryl ether
           nitrile) capped by phthalonitrile and composites

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      Authors: Xuhai Xiong, Lei Yao, Rong Ren, Donghui Liu, Na Li
      Abstract: High Performance Polymers, Ahead of Print.
      A new series of high-temperature resistant bisphthalonitrile resins containing trifluoromethyl groups were prepared based on 4,4’-(hexafluoroisopropylidene) bisphthalonitrile (BFPh), which was toughened by hexafluoroisopropylidene-containing poly (aryl ether nitrile) oligomer capped by phthalonitrile (FPEN-Ph) in the different content. In addition, glass fiber reinforced composites were prepared by hot pressing process. The structure of the oligomer was characterized by FTIR and 1HNMR. The curing behavior of the blends was studied by DSC. Thermal stability and mechanical properties were also studied. The results showed that the introduction of appropriate content of FPEN-Ph could improve the reactivity of the curing reaction. TGA and DMA results showed that the cured polymers and composites had excellent thermal properties. The residual mass of FPEN-Ph content of 10% at 800°C was 72.4%, and the 5% thermal degradation temperature (T5%) under inert atmosphere was 530°C. The flexural strength of glass fiber reinforced composites was about 592.7 MPa, and the shear strength was about 61.6 MPa, showing excellent mechanical properties. The high-tech thermosetting resin was toughened and enhanced at the same time without reducing heat resistance.
      Citation: High Performance Polymers
      PubDate: 2024-01-31T11:39:45Z
      DOI: 10.1177/09540083241229209
       
  • A novel anion exchange membrane of three aromatic units copolymer for fuel
           cells

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      Authors: Shanchang Zheng, Yue Huang, Yani Hua, Zhan Gao
      Abstract: High Performance Polymers, Ahead of Print.
      Anion exchange membrane fuel cell (AEMFC) has made great progress recently due to the continuous improvement of anion exchange membrane (AEM). Aryl ether bond-free membranes are considered to be promising for improving the overall performance of AEMs. Here, we present a copolymer consisting of m-terphenyl, diphenyl ethane and biphenyl (PMDBP) to further enhance the microphase separation structure by introducing a third structural unit, biphenyl. Meanwhile, the more compact biphenyl structure enhances the mechanical strength of AEMs. Specifically, PMDBP AEMs possess superior OH- conductivity (up to 113 mS cm−1) and excellent mechanical properties (tensile strength up to 42 MPa). Furthermore, the PMDBP has an outstanding single-cell performance with a peak power density (PPD) of up to 95 mW cm−2 with a platinum-carbon (Pt/C) catalyst at 80°C in H2-air. In addition, PMDBP is provided with excellent durability, including NMR spectral consistency and over 90% ion conductivity retention in 1 M NaOH at 60°C for 720 h. This study provided a copolymer structure suitable for anion exchange membrane that can provide excellent performance for fuel cells and electrolyzers.
      Citation: High Performance Polymers
      PubDate: 2024-01-31T01:54:26Z
      DOI: 10.1177/09540083241230034
       
  • Preparation and mechanical properties of Ni/RGO reinforced epoxy resin
           composites

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      Authors: Xinjia Yang, Keru Song, Dongyu Zhao
      Abstract: High Performance Polymers, Ahead of Print.
      The graphene/nanonickel composites(Ni/RGO) were prepared by liquid phase reduction method, and the graphene/nanonickel epoxy composites(Ni/RGO/EP) were prepared by in-situ polymerization method. The glass transition temperature (Tg) of the modified epoxy resin was increased by 19°C compared to EP with 2.1 wt% Ni/RGO loading. The tensile strength and hardness increased by 65% and 18%, the impact strength is increased by 10.053 KJ·m−2 compared to EP, and the shear strength reaches 34.78 MPa for the Ni/RGO/EP with 1.7 wt% Ni/RGO loading. It can be seen, that the addition of Ni/RGO greatly improves the heat resistance and mechanical properties of epoxy resin when the Ni/RGO are evenly dispersed into the epoxy resin by emulsion dispersion method.
      Citation: High Performance Polymers
      PubDate: 2024-01-03T03:56:26Z
      DOI: 10.1177/09540083231225284
       
  • Preparation of high temperature resistant polycarbonate via ionic liquid
           activation of bisphenol fluorene under mild conditions

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      Authors: Huanhuan Gao, Xiaozhou Zhang, Xigao Jian, Jinyan Wang
      Abstract: High Performance Polymers, Ahead of Print.
      In this study, the melt polycondensation reaction of 9,9’- bis(4-hydroxyphenyl)fluoride (BHPF) and diphenyl carbonate (DPC) was catalyzed using three ionic liquids (ILs) and a conventional alkali metal as catalysts. The optimal IL catalysts were determined to be [BMmim][BF4] ionic liquid catalysts, and the catalytic mechanism was investigated. Furthermore, the optimum process conditions were identified: the optimal amount of [BMmim][BF4] was 0.05 mol% based on DPC, the polycondensation temperature was set at 200°C for a duration of 3 h, followed by polymerization at 280°C for another 3 h. As a result, the Mn value of poly(9,9-bis(4-hydroxyphenyl) carbonate) (PFC) reached up to 41387 g/mol with a glass transition temperature band of approximately 254°C and Td-5% value of around 436°C.
      Citation: High Performance Polymers
      PubDate: 2023-12-30T08:03:52Z
      DOI: 10.1177/09540083231225290
       
  • Viscoelastic behaviour of poly(ether-ketone)/fly ash composites fabricated
           by powder metallurgical route

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      Authors: Mukesh Kumar, RK Goyal, S Sharma
      Abstract: High Performance Polymers, Ahead of Print.
      Poly(ether-ketone)/fly ash (FA) composites reinforced with 0-30 wt% FA were fabricated using ball milling followed by hot compaction. The composites were investigated for mechanical and viscoelastic properties. Scanning electron microscopy revealed excellent dispersion and good adhesion of FA particles with the matrix. The addition of FA increased the microhardness by 70% and the storage modulus (below glass transition) by 75%. The reinforcing efficiency was better above the glass transition, which increased to around 177% at 250°C. This research indicates that the FA can be used as an alternative reinforcement of costly ceramic powder for the electronic packaging substrate or printed circuit board applications.
      Citation: High Performance Polymers
      PubDate: 2023-12-28T12:38:06Z
      DOI: 10.1177/09540083231224608
       
  • Forming method, crystallinity, and mechanical performance of
           buckypaper/carbon fiber/polyether ether ketone multi-scale thermoplastic
           composites

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      Authors: Ziang Jin, Shouzheng Sun, Mingyu Liu, Sunil Chandrakant Joshi, Zhenyu Han, Zheng Zheng, Guiyan Qiang
      Abstract: High Performance Polymers, Ahead of Print.
      Carbon fiber/polyether ether ketone thermoplastic composites formed by automated fiber placement are susceptible to delamination damage. The interlaminar mechanical performance of carbon fiber/polyether ether ketone laminates can be enhanced in situ by doping carbon nanotubes in the plies. In this paper, the interfacial bonding energy between polyether ether ketone and buckypaper is analyzed by molecular dynamics. A novel method for preparing buckypaper/polyether ether ketone reinforcement materials and buckypaper/carbon fiber/polyether ether ketone multi-scale thermoplastic composites is proposed. The microstructure, crystallinity, and mechanical properties are analyzed. The results show that the polyether ether ketone resin fully penetrate the buckypaper interior and have a good interfacial bonding property. The buckypaper/polyether ether ketone composite films have a dense structure and are well-doped into the plies of carbon fiber/polyether ether ketone laminates. Compared with carbon fiber/polyether ether ketone laminates, the crystallinity, interlaminar shear strength, Model-I fracture toughness, and Model-II fracture toughness of buckypaper/carbon fiber/polyether ether ketone laminates are increased by 22.3%, 22.2%, 20%, and 9.5%, respectively.
      Citation: High Performance Polymers
      PubDate: 2023-12-27T11:22:03Z
      DOI: 10.1177/09540083231225000
       
  • Preparation and dielectric properties of polyimide-based composites with
           Al-Nb co-doped SiO2

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      Authors: Wenchao Zhang, Qiang Fu, Qixin Yuan, Han Li, Dong Yue, Yu Feng, Qingguo Chen, Jinghua Yin
      Abstract: High Performance Polymers, Ahead of Print.
      Polyimide (PI) film have been synthesized and used extensively in energy transmission, wind power generation, new energy vehicles, lidar, and high-power weapons, et al. Nevertheless, it is still challenge to further improve the breakdown strength and dielectric constant of PI film. After the powders of Al0.5xNb0.5xSi1-xO2 (NASO (x mol%)) have been fabricated, it was analyzed that the effect of doping elements Al3+ and Nb5+ on the surface chemistry and microstructure of the NASO powder. And then a small amount of NASO powder was polymerized in situ with PI matrix material, and the effects of NASO on dielectric properties and breakdown strength of the NASO/PI composites were analyzed. The results showed that the introduction of the doping elements Al3+ and Nb5+ favors could be conductive to the formation of oxygen vacancies on the surface of the NASO particle, which improved the surface activity and chemical reactivity of the NASO particle. The PI matrix can efficiently capture additional charges and enhance the insulating characteristics of the NASO/PI composite by properly doping NASO fillers with specific defect concentrations. In the results the breakdown strength of 1 vol% NASO (1 mol%)/PI composites reaches 334.38 kV/mm, which is a 19.6% higher than that of PI. Because the traps in the fillers capture and suppress the carrier transport to enhance the insulating properties of the composites. This work offers a novel synthesis method to simultaneously produce polymer dielectrics with high insulation and high polarization.
      Citation: High Performance Polymers
      PubDate: 2023-12-23T10:34:02Z
      DOI: 10.1177/09540083231224158
       
  • Influence of monomer concentration on structures of fully condensed
           polyphenylsilsesquioxanes

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      Authors: Xiaolu Wu, Zhaolu Qin, Wenchao Zhang, Rongjie Yang
      Abstract: High Performance Polymers, Ahead of Print.
      Fully condensed polyphenylsilsesquioxanes have been prepared via the hydrolysis and condensation of the same phenyltrimethoxysilane (PTMS) monomer in different concentrations. The effect of monomer concentration on molecular structure of the final products has been thoroughly investigated. Cage structured polyphenylsilsesquioxane (OPS) and ladder-like structured polyphenylsilsesquioxane (L-PPSQ) can be selectively synthesized from the same starting materials at lower and higher initial monomer concentrations. Meanwhile, online infrared detector, React IR TM15 was used to monitor the real time variation of the concentration and characteristic absorption peaks of any intermediate products that may exist. Then, React IR TM15 coupled with 29Si nuclear magnetic resonance spectroscopy (NMR), gel permeation chromatography (GPC) and matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF-MS) were used to monitor and identify the intermediate species during the reaction. Mechanism studies indicated that the condensation reaction of OPS and L-PPSQ both proceed through a T1 structure dimer, which was formed by the quick hydrolysis of the PTMS monomer. As confirmed by 29Si-NMR, GPC and MALDI-TOF-MS, the synthesis mechanisms of OPS and L-PPSQ during the hydrolysis-condensation reactions were delineated.
      Citation: High Performance Polymers
      PubDate: 2023-12-18T02:28:24Z
      DOI: 10.1177/09540083231222593
       
  • Fabrication of high performance polyimide fibers by dry-jet wet spinning
           technology

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      Authors: Xiaowei Wang, Mengying Zhang, Hongqing Niu, Dezhen Wu
      Abstract: High Performance Polymers, Ahead of Print.
      High-performance co-polyimide (co-PI) fibers derived from 3,3`4,4`-biphenyldianhydride (BPDA), p-phenylenediamine (p-PDA) and 2-(4-aminophenyl)-5-amino-benzimidazole (BIA) were prepared via the wet spinning and dry-jet wet spinning method, respectively. The distinctions between wet spinning and dry-jet wet spinning processes on the structures and properties of co-PI fibers were systematically investigated. The co-PI fibers prepared by dry-jet wet spinning exhibited smoother surface morphology and higher mechanical properties than those of co-PI prepared by wet spinning. Wide-angle X-ray diffraction (WAXD) results showed that the co-PI fibers prepared by dry-jet wet spinning exhibited highly oriented structure along the fiber direction along with a low degree of lateral packing order in the transverse direction. Small-angle X-ray scattering (SAXS) revealed that the radius, length, misorientation and internal surface roughness of the microvoids in the co-PI fibers prepared by the dry-jet wet spinning are lower than those in co-PI fibers prepared by wet spinning. Moreover, the effect of air layer height, as well as the heat treatment on the structure and properties of fibers during the dry-jet wet spinning process, was also studied. The tensile strength and modulus of co-PI fibers prepared by dry-jet wet spinning reached 2.72 GPa and 114.29 GPa, respectively, with an air layer height of 10 mm and a heat stretching temperature of 440°C.
      Citation: High Performance Polymers
      PubDate: 2023-12-15T02:21:34Z
      DOI: 10.1177/09540083231221248
       
  • Fabrication and characterization of modified POD membranes with ultra-high
           tensile strength through hydrogen bonding functioning and copolymerization
           

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      Authors: Mengxiang Huang, Lihong Li, Wenlian Xie, Ni Yan, Limin Yuan, Zhiqiang Zhu, Zhenlin Jiang
      Abstract: High Performance Polymers, Ahead of Print.
      A series of modified aromatic oxadiazole polymers were synthesized via condensation reactions of terephthalic dihydrazide (TPH) and varying amounts of Trimesic acid (H3BTC) in polyphosphoric acid (PPA). Pentaerythritol was introduced to construct intermolecular hydrogen bonds among polymeric chains, resulting in a three-dimensional network structure, and correlations between H-bonds and mechanic properties are discussed. Structures and mechanic properties of the polymers were characterized and analyzed. By investigation of molecular structure and membrane formation process of chemically modified and hydrogen bond-regulated polymer membranes, it was found that the modified polymer membranes retain the unique thermal stability, chemical stability, and good hydrophobicity of the POD rigid polymer. Additionally, hydrogen bonds not only significantly improve the overall quality of the membrane, but also play an important role in enhancing the mechanical properties of the membrane, as demonstrated in the highest observed of up to a maximum of 167.19 MPa. Furthermore, impact of H3BCT modification on light absorption and fluorescence performance of T-PODx is also analyzed and discussed in this paper.
      Citation: High Performance Polymers
      PubDate: 2023-12-02T09:54:03Z
      DOI: 10.1177/09540083231219780
       
  • Synthesis and characterization of low retardation colorless polyimides
           containing m-phenylenediamine with different pendant groups

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      Authors: Xiaohong Li, Nafeesa Mushtaq, Jinglei Xing, Guofei Chen, Xingzhong Fang
      Abstract: High Performance Polymers, Ahead of Print.
      In this study, 4-biphenyl-3,5-diaminobenzoate (E-m-PDA) was synthesized by three steps using 3,5-dinitrobenzoic acid as a starting material. Two series of colorless polyimides (CPIs) PI-(1a-1d) and PI-(2a-2d) were prepared by traditional two-step polycondensation of m-phenylenediamine (m-PDA) based diamines with different pendant groups (-H, CF3, COOH and biphenyl ester) with aromatic dianhydrides BPADA and 6FDA, respectively. All of the prepared CPIs exhibited high thermal stability with 5% weight loss at temperatures ranging from 428 to 539°C in nitrogen, and glass transition temperatures (Tgs) ranging from 228 to 332°C. These PI films displayed a UV-vis absorption cut-off wavelength at 338–376 nm and transparency of 76%–89% at a wavelength of 450 nm. Both series of colorless PI films also showed low birefringence values of 0.0021–0.0100. In addition, the optical retardations of these CPIs were extremely low (48–220 nm), indicating low optical anisotropy of these CPI films. Colorless PI film PI-2d prepared based on E-m-PDA and 6FDA had good comprehensive properties of low birefringence ([math] n of 0.0064), high Tg (319°C) and excellent transparency (T450 of 88%).
      Citation: High Performance Polymers
      PubDate: 2023-11-01T10:34:33Z
      DOI: 10.1177/09540083231208019
       
  • The history, interests and future of polyphenylene sulfide: A bibliometric
           analysis

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      Authors: Lu Shen, Jian Xing
      Abstract: High Performance Polymers, Ahead of Print.
      Polyphenylene sulfide (PPS) with unique performance advantages and development potential is widely used in electronics, aerospace, environmental protection, automobile, machinery, textile, chemical, pharmacy, environmental protection and other industries. The researches on PPS material are constantly advancing and improving in both quantity and quality. To clarify the progress and status, and to explore current focus and development trend of PPS at a global level, the bibliometric analysis was used based on Web of Science Core Collection database. 1118 papers were retrieved, and countries or regions, institutions, journals, authors, research areas, author keywords, and highly cited articles were discussed in detail. The results of bibliometric analysis show that China was the dominant country in terms of contributions of paper output, followed by the USA, South Korea, Japan, India, and Germany. Germany and China both were the most active partner which worked with other high productive countries. “Polymer science” was the most attractive research area with 451 papers involved in. “Journal of Applied Polymer Science” was the most comprehensive source of PPS material publications and with the highest h-index. The author keywords “mechanical property”, “behavior”, “composite”, “morphology”, “kinetics”, “friction”, “tribological property” and “crystallization” reflected a high level attention and hot topics for PPS. Based on the results of bibliometric analysis, the research progress and achievements of preparation, performance improvement and application field expansion in recent years were summarized and explained. To achieve more comprehensive performance and to be suitable for more special applications in various fields, the enhancement and toughening of PPS, the modification by blending or alloying with other polymers or other reinforcing materials, the production of PPS ultrafine fiber and PPS membrane were shownas the research emphasis.
      Citation: High Performance Polymers
      PubDate: 2023-10-31T09:43:26Z
      DOI: 10.1177/09540083231212148
       
  • Polyimide aerogels with low thermal conductivity and high-temperature
           stable properties prepared by lyophilization for flexible thermal
           protection

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      Authors: Bing Xu, Zhipeng Zhang, Hongtan Liang, Jie Hu, Lixiang Chen, Zhen Wang, Bo Chai, Guozhi Fan
      Abstract: High Performance Polymers, Ahead of Print.
      Polyimide aerogel, presenting an outstanding new material for lightweight protective thermal insulation, has garnered significant attention in the aerospace field. Despite its potential, due to the high production cost of the supercritical drying method used for its preparation, its widespread application is limited. In this research, a series of lightweight polyimide aerogels (F-PIAs, 3,3',4,4'-biphenyl tetracarboxylic dianhydride (s-BPDA) and 4,4'-diaminodiphenyl ether (ODA)) with excellent thermal protection properties were prepared by lyophilization. The findings indicated that F-PIAs (Freeze-dried polyimide aerogels) exhibited comparable physical characteristics to S-PIAs (Supercritical-dried polyimide aerogels), while their preparation cost was even more economical. F-PIAs exhibits excellent flexible and compression behavior (compression strength up to 1.16 MPa, modulus up to 12.8 MPa), which provide a great structural basis for the production of molded thermal insulation protective materials. The average pore diameter of F-PIAs is in the range of 7∼11 nm. The nanoporous structure leads to the gas within the pores of the aerogel producing the Knudsen effect, thereby significantly enhancing the thermal insulation performance of the aerogel. The thermal conductivity of F-PIA-4 (Freeze-dried polyimide aerogels with a solid content of 4%) at room temperature is as low as 0.023 W·m−1·K−1, which is superior to the PIAs (0.043 W·m−1·K−1) prepared by lyophilization in literature. Its thermal diffusion coefficient changes from 0.108 mm2·s−1 to 0.18 mm2·s−1 in the temperature range of 27°C to 200°C, demonstrating good thermal insulation performance at high temperatures. Meanwhile, after heating on a 150°C flat plate for 11 min and 41 s, the surface temperature of F-PIA-4 was only 36.2°C, further verifying its excellent thermal insulation performance. The results of the TGA experiment on F-PIA-4 demonstrated the high-temperature stability of aerogel (Td5% is higher than 523°C, Td10% is higher than 566°C). The exceptional properties of F-PIAs hold significant practical reference value in helping to reduce the manufacturing cost of high-performance aerogel thermal insulation materials, thereby enabling their widespread application in aerospace, military, and civil field.
      Citation: High Performance Polymers
      PubDate: 2023-10-20T06:56:31Z
      DOI: 10.1177/09540083231209487
       
  • Enhancing electromagnetic absorption in microwave of epoxy resin through
           incorporated surface modified aluminum oxide nanoparticles

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      Authors: Youcef Amine Medjaouri, Achour Ales, Oussama Mehelli, Redouane Tahmi, Karim Benzaoui, Abdelmalek Habes, Mehdi Derradji
      Abstract: High Performance Polymers, Ahead of Print.
      The development of novel nanomaterials with superior reflection loss (RL), thin thickness, wide bandwidth, and low density has recently received significant attention in an effort to increase their effectiveness in electromagnetic (EM) microwave absorption while maintaining an easy manufacturing process. Naturally, using conventional materials with magnetic or dielectric loss makes it difficult to achieve the last criterion and limitations the thickness of the absorber and mass production. In this work, microwave nanocomposites samples were prepared on epoxy resin with different percentages of the nanoparticles of aluminum oxide (epoxy/Al2O3) with surfaces treated by amino propyl and silane. The surface treatment was carried out to improve the adhesion, morphology, and EM properties of the samples to enhance the microwave absorption and the Shielding Effectiveness (SE). Therefore, the treated sample can be considered as potential candidate for high frequency EM absorption applications. Then, the study is followed by structural, morphological, thermal, and electrical characterization of the prepared samples in order to enhance the performances of the latters. The EM absorption and the shielding effectiveness were done in the X band frequency (8 GHz-12 GHz). The obtained results confirmed that the nanocomposites treated samples exhibit higher EM absorption performance and better electrical characteristics. Overall, these results put forward the role played by the addition of the nanoparticles films as high-performance materials in electronic devices and EM applications.
      Citation: High Performance Polymers
      PubDate: 2023-10-19T12:15:05Z
      DOI: 10.1177/09540083231206563
       
  • Epoxy resin/cyannate ester copolymer with improved fire safety, mechanical
           properties and low dielectric loss enabled by
           10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxa-10-phosphazephenanthrene-10-oxide
           and copper hydroxystannate

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      Authors: Zhenyu Huang, Zhengzhou Wang
      Abstract: High Performance Polymers, Ahead of Print.
      Epoxy resin/cyanate ester copolymer (EC) possesses the advantages of low dielectric constant and low dielectric loss, while the easy flammability of EC restricts its applications. The effect of 10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxa-10-phosphazephenanthrene-10-oxide (DQ) and copper hydroxystannate (CuHS) on the flame retardancy, smoke suppression, mechanical properties and thermal decomposition behavior of EC was studied. The EC composite containing 7 wt% DQ and 3 wt% CuHS (EC/7DQ3CuHS) passed the UL-94 V0 rating with a limiting oxygen index of 32.0% The peak heat release rate and total heat release of EC/7DQ3CuHS fell by 41.9% and 35.0% respectively, compared with those of pure EC. The total smoke release of EC/7DQ3CuHS was reduced by 36.0% in comparison with that of the EC composite containing 10 wt% DQ. The tensile and impact strengths of the EC composite with 9 wt% DQ and 1 wt% CuHS increased by 16.9% and 19.2%, respectively in contrast with pure EC. The dielectric constant and dielectric loss of the EC composites maintained at relative low values. The as-prepared EC composites have application prospect in electronic packaging industry.
      Citation: High Performance Polymers
      PubDate: 2023-10-16T11:20:00Z
      DOI: 10.1177/09540083231207788
       
  • Sustainable synthesis of a novel bio-based low temperature curable
           benzoxazine monomer from quercetin: Synthesis, curing reaction and thermal
           properties

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      Authors: Abdelwahed Berrouane, Mehdi Derradji, Karim Khiari, Oussama Mehelli, Abdelmalek Habes, Slimane Abdous, Bouchra Amri, Mohamed El Amine Kadi, Wenbin Liu
      Abstract: High Performance Polymers, Ahead of Print.
      In an attempt to make polybenzoxazines more sustainable, a novel bio-based benzoxazine monomer namely Q-Bz was synthetized via the Mannich condensation reaction utilizing Quercetin, paraformaldehyde and aniline. The chemical structure of the monomer was confirmed by 1H nuclear magnetic resonance (1H NMR) and Fourier transform infrared spectroscopies (FTIR). The curing behaviour was studied by differential scanning calorimetry (DSC) and the polymerization process was investigated by FTIR. The obtained results showed very low melting and polymerization temperatures (73 and 183°C, respectively) and the disappearance of the oxazine ring absorption bands due to the ring opening polymerization of the monomers. Afterwards, the cured bio-based thermoset, referred to as PQ-Bz, was obtained and its thermal stability and thermo-mechanical properties were also assessed by DSC and thermogravimetric analysis (TGA). As expected the newly developed thermoset exhibited high thermal stability along with excellent processability. Indeed, the results showed that PQ-Bz had a relatively high Tg of approximately 280°C, with a 53% char yield at 800°C, 5% and 10% weight reduction temperature (T5% and T10%) values of 349 and 373°C, respectively. These findings demonstrate the potential of the novel bio-based benzoxazine monomer as a sustainable alternative to traditional petroleum-based thermosets in high performance applications.
      Citation: High Performance Polymers
      PubDate: 2023-10-13T06:35:54Z
      DOI: 10.1177/09540083231206532
       
  • Synthesis and properties of phthalonitrile-based resins containing
           spirocycle acetal

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      Authors: Ke Li, Hua Yin, Kun Yang, Pei Dai, Ling Han, Riwei Xu
      Abstract: High Performance Polymers, Ahead of Print.
      Designing novel low-melting, high-rigidity phthalonitrile resin is of great significance in the current context of development. In this study, rigid spirocycle acetal structure was introduced into phthalonitrile to reduce the melting point and maintain their thermal stability. The chemical structure of resins was confirmed by nuclear magnetic resonance (NMR) spectrometry, matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry and Fourier-transform infrared (FTIR) spectroscopy. The curing behaviors were studied by differential scanning calorimetry (DSC). Thermal stability and mechanical properties of the cured resins were investigated by dynamic mechanical thermal analysis (DMTA) and thermogravimetric analysis (TGA). The processability was studied by rheological analysis. The results indicated the three monomers had a low melting temperature, wide processing windows and low viscosities. These polymers did not exhibit Tg from room temperature to 400°C, exhibited superb dynamic mechanical property and thermal stability.
      Citation: High Performance Polymers
      PubDate: 2020-12-22T07:13:41Z
      DOI: 10.1177/0954008320977594
       
  • SiBCN ceramic precursor modified phthalonitrile resin with high thermal
           resistance

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      Authors: Zi-long Wang, Yue Han, Xian-yuan Liu, Ying Guo, Heng Zhou, Jun Wang, Wen-bin Liu, Ye Li, Han Weijian, Tong Zhao
      Abstract: High Performance Polymers, Ahead of Print.
      In order to expand the application of phenolic-type phthalonitrile resin in high-temperature fields, a series of organic–inorganic hybrid materials have been prepared via conventional blending and doping method. The chemical transformations were monitored by various measurements, while the curing behavior was evaluated by differential scanning calorimetry (DSC), and these new blends could be also cured under auto-catalytic process. The onset polymerization exothermic temperature shifted to lower temperatures (195.3°C). Later, the compatibility within the cured products was analyzed by using energy dispersive spectrometer (EDS) and scanning electron microscope (SEM), where no phase separation occurred between the ceramic domain and the phthalonitrile polymer. Upon curing, the thermal properties of the polymers were characterized by dynamic thermomechanical analysis (DMA) and thermogravimetric analysis (TGA), where enhanced heat resistance and thermal stability were discovered, The blends residual weight (Cy) value was 57.6% with 15 wt.% SiBCN at 1000°C. And when blended with SiBCN precursor, no peak or onset point could be observed in the temperature range (50 to 500°C), which indicated the glass transition temperature greater than 500°C. Additionally, the dielectric properties were evaluated. And when the content was 5 wt.%, the blends dielectric loss was 0.0043 and the permittivity was 4.31. The above results indicated that the introduction of ceramic precursors could enhance the thermal performance of phthalonitrile polymers, consequently the hybrid materials shown great potential in the application of higher temperature fields.
      Citation: High Performance Polymers
      PubDate: 2020-12-07T10:32:04Z
      DOI: 10.1177/0954008320977611
       
 
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  Subjects -> CHEMISTRY (Total: 928 journals)
    - ANALYTICAL CHEMISTRY (59 journals)
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INORGANIC CHEMISTRY (45 journals)

Showing 1 - 36 of 36 Journals sorted alphabetically
Acta Polymerica     Hybrid Journal   (Followers: 9)
Additives for Polymers     Full-text available via subscription   (Followers: 20)
Advances in Inorganic Chemistry     Full-text available via subscription   (Followers: 10)
Advances in Polymer Technology     Open Access   (Followers: 13)
Annual Reports Section A (Inorganic Chemistry)     Full-text available via subscription   (Followers: 5)
Bioinorganic Chemistry and Applications     Open Access   (Followers: 5)
Comments on Inorganic Chemistry: A Journal of Critical Discussion of the Current Literature     Hybrid Journal   (Followers: 1)
Communication in Inorganic Synthesis     Open Access  
European Journal of Inorganic Chemistry     Hybrid Journal   (Followers: 11)
European Polymer Journal     Hybrid Journal   (Followers: 43)
High Performance Polymers     Hybrid Journal   (Followers: 1)
Indian Journal of Chemistry - Section A     Open Access   (Followers: 9)
Inorganic and Nano-Metal Chemistry     Hybrid Journal  
Inorganic Chemistry     Hybrid Journal   (Followers: 33)
Inorganic Chemistry Communications     Hybrid Journal   (Followers: 14)
Inorganic Chemistry Frontiers     Hybrid Journal   (Followers: 4)
Inorganic Materials     Hybrid Journal   (Followers: 6)
Inorganic Materials: Applied Research     Hybrid Journal   (Followers: 1)
Inorganica Chimica Acta     Hybrid Journal   (Followers: 6)
Inorganics     Open Access   (Followers: 1)
International Journal of Bio-Inorganic Hybrid Nanomaterials     Open Access   (Followers: 5)
International Journal of Inorganic Chemistry     Open Access   (Followers: 3)
JBIC Journal of Biological Inorganic Chemistry     Hybrid Journal   (Followers: 2)
Journal of Inorganic and Organometallic Polymers and Materials     Hybrid Journal   (Followers: 8)
Journal of Inorganic Biochemistry     Hybrid Journal   (Followers: 3)
Journal of Inorganic Chemistry     Open Access   (Followers: 4)
Journal of Polymers and the Environment     Hybrid Journal   (Followers: 1)
Journal of Progressive Research in Chemistry     Open Access   (Followers: 2)
Journal of Separation Science     Hybrid Journal   (Followers: 5)
Materials Today Chemistry     Hybrid Journal   (Followers: 2)
Open Journal of Inorganic Chemistry     Open Access   (Followers: 1)
Polymer Bulletin     Hybrid Journal   (Followers: 8)
Polymer Composites     Hybrid Journal   (Followers: 17)
Russian Journal of Inorganic Chemistry     Hybrid Journal  
Separation Science plus (SSC plus)     Hybrid Journal   (Followers: 1)
Zeitschrift für anorganische und allgemeine Chemie     Hybrid Journal   (Followers: 1)
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