Subjects -> MANUFACTURING AND TECHNOLOGY (Total: 363 journals)     - CERAMICS, GLASS AND POTTERY (31 journals)    - MACHINERY (34 journals)    - MANUFACTURING AND TECHNOLOGY (223 journals)    - METROLOGY AND STANDARDIZATION (6 journals)    - PACKAGING (19 journals)    - PAINTS AND PROTECTIVE COATINGS (4 journals)    - PLASTICS (42 journals)    - RUBBER (4 journals) PLASTICS (42 journals)
 Showing 1 - 39 of 39 Journals sorted by number of followers Journal of Applied Polymer Science       (Followers: 135) Polymer       (Followers: 89) European Polymer Journal       (Followers: 42) Plastic and Polymer Technology       (Followers: 40) Plastic and Reconstructive Surgery       (Followers: 31) Additives for Polymers       (Followers: 20) Reinforced Plastics       (Followers: 17) Polymer Engineering & Science       (Followers: 14) Advances in Polymer Technology       (Followers: 13) ACS Applied Polymer Materials       (Followers: 11) Chinese Journal of Polymer Science       (Followers: 9) Acta Polymerica       (Followers: 9) Journal of Inorganic and Organometallic Polymers and Materials       (Followers: 8) Polymer Bulletin       (Followers: 6) Journal of Polymer Research       (Followers: 6) International Journal of Polymeric Materials       (Followers: 6) Journal of Polymer Science Part C : Polymer Letters       (Followers: 5) Polymer-Plastics Technology and Materials       (Followers: 5) Advanced Industrial and Engineering Polymer Research       (Followers: 5) Polymer Science Series B       (Followers: 4) Polymer Science, Series A       (Followers: 3) Polymer Science Series C       (Followers: 3) Polymer Science Series D       (Followers: 3) Iranian Journal of Polymer Science and Technology       (Followers: 1) Progress in Rubber, Plastics and Recycling Technology       (Followers: 1) Microplastics and Nanoplastics       (Followers: 1) High Performance Polymers       (Followers: 1) Journal of Polymers and the Environment       (Followers: 1) International Polymer Processing       (Followers: 1) Journal of Cellular Plastics       (Followers: 1) Journal of Plastic Film and Sheeting       (Followers: 1) Plastics Engineering       (Followers: 1) Polymers from Renewable Resources International Journal of Biobased Plastics Polymers and Polymer Composites SPE Polymers Majalah Kulit, Karet, dan Plastik Cirugia Plastica Ibero-Latinoamericana Journal of Elastomers and Plastics
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 Journal of Inorganic and Organometallic Polymers and MaterialsJournal Prestige (SJR): 0.402 Citation Impact (citeScore): 2Number of Followers: 8      Hybrid journal (It can contain Open Access articles) ISSN (Print) 1574-1443 - ISSN (Online) 1574-1451 Published by Springer-Verlag  [2467 journals]
• Experimental and Theoretical Correlation of Modulated Architectures of
β-Ag2MoO4 Microcrystals: Effect of Different Synthesis Routes on the
Morphology, Optical, Colorimetric, and Photocatalytic Properties

Abstract: In this paper, the effect of different synthesis methods, such as controlled precipitation (CP), sonochemical, hot solution ion injection with fast cooling, and conventional hydrothermal in obtaining beta-disilver molybdate (β-Ag2MoO4) are explained in details. X-ray diffraction patterns, Rietveld refinement data, cluster modeling, micro-Raman, and Fourier transform infrared spectroscopies confirmed that all β-Ag2MoO4 crystals have a spinel-like cubic structure, space group (Fd $$\overline{3 }$$ m), and symmetry point group ( $${O}_{h}^{7}$$ ). Field emission scanning electron microscopy (FE-SEM) images showed that through different synthetic routes, it is possible to obtain monophasic crystals, such as regular/irregular polyhedrons (cubes, cuboctahedron, trapezohedron, rhombic dodecahedron), potatoes, and non-uniform. The crystal shape observed experimentally was modeled based on Rietveld refinement data and FE-SEM images obtained by KrystalShaper program. First-principles quantum mechanical calculations based on density functional theory were employed to modulate the crystals’ surfaces and to obtain their surface energy (Esurf) values. From these Esurf values in association with the Wulff construction, the evolution of the crystals shape was achieved correlating with the experimental results when different synthesis methods are used. Ultraviolet–Visible (UV–Vis) spectroscopy measurements in absorbance mode showed three main absorptions (280, 310, and 340 nm), while the UV–Vis analyses in diffuse reflectance mode showed a tail of energy absorption in the UV spectrum range (3.25 eV and 3.3 eV). The quantitative data from the colorimetric analysis indicated that the β-Ag2MoO4 crystals are desirable for developing inorganic pigments with a beige to brown shade. Photocatalytic assays were performed using four lamps: UV-C, UV-B, UV-A, and visible light. The β-Ag2MoO4 crystals prepared by the CP method showed a higher degradation rate at 85.12% for the Rhodamine B dye solution under 240 min exposure to UV-C light. Graphical
PubDate: 2022-11-27

• Effects of Interfacial Interactions and Nanoparticle Agglomeration on the
Structural, Thermal, Optical, and Dielectric Properties of
Polyethylene/Cr2O3 and Polyethylene/Cr2O3/CNTs Nanocomposites

Abstract: In this report, we have synthesized the binary and ternary phase nanocomposites [(polyethylene (PE)1−X/(Cr2O3)x) and (PE)1−X/(Cr2O3)X/CNTs (where X = 0, 2%, 4%, 6%, 8%, and 10%)] using the melt mixing method and studied the structural, optical, thermal and dielectric properties with an increase in Cr2O3 nanofiller concentration. Our results show an increase in interfacial interactions between Cr2O3 nanofiller and PE matrix with an increase in nanofiller concentration up to X = 6%. After that, the interactions decreased with a further increase in X because of the increase in the size of the Cr2O3 nanoparticle aggregates. Incorporating 2% carbon nanotubes (CNTs) into (PE)1−X/(Cr2O3)X nanocomposites, further decreases the interactions between the Cr2O3 nanofiller and the PE matrix.
PubDate: 2022-11-21

• Controlled Chemical Transformation and Crystallization Design for the
Formation of Multifunctional Cu-Doped ZnO/ZnAl2O4 Composites

Abstract: Photoactive Cu-doped ZnO–ZnAl2O4 ceramic nanocomposites and coatings were prepared by polymer-salt method. The luminescent spectroscopy, scanning electron microscopy (SEM) and X-ray diffraction methods were used for the study the structure, morphology and materials properties. The nanocomposites consist of small hexagonal ZnO and cubic ZnAl2O4 nanocrystals having size about 10 nm. The study of luminescence properties shows that prepared nanocomposites can be used as light down-converters that transfer short-wave ultraviolet (UV-C) radiation into long-wave ultraviolet (UV-A) and visible spectral range. These nanocomposites can be very attractive in photovoltaic applications as spectral down-converters. Also obtained nanocomposites demonstrate the ability to generate chemically active singlet oxygen under UV-A radiation and blue light. The experiments show that Cu-doped ZnO–ZnAl2O4 materials demonstrate antibacterial activity against gram-positive bacteria. Graphical
PubDate: 2022-11-09

• Author Correction: Influence of Severe Double‑Shot Peening and Plasma
Spray Arc TiAlCr/AlCrSi Coating on Tribological Behaviour of Pure
Aluminium Alloy

PubDate: 2022-11-09

• Novel Ternary Epoxy Resin Composites Obtained by Blending Graphene Oxide
and Polypropylene Fillers: An Avenue for the Enhancement of Mechanical
Characteristics

Abstract: In this report, epoxy resin (EP) composites prepared using polypropylene (PP) and graphene oxide (GO) as additives in varying percentages are reported. Around 21 types of composites were prepared by dispersing polypropylene in 5–35%, or graphene oxide in 5–35%, with 95–65% of epoxy resin. Also, a ternary composite of EP matrix was prepared by adding 1:1 ratio of both PP & GO (5–35%) in 95–5% through a melt condensation technique. The graphene oxide platelets used in the study were obtained through modified Hummers method. The particle size and its structural characteristics were evolved through FESEM & XRD studies. The mechanical aspects of composites were tested by following standard ASTM procedures. The failed portions of the composites were examined through FESEM; it revealed a fiber/thread like structure, which promotes the higher tensile strength, Young’s modulus, etc. In contrast to the plain epoxy resin, the composites display remarkable mechanical properties. Especially, the epoxy resin (80%) blended with 10% PP and 10% GO displays higher tensile strength (22.5 MPa,) tensile modulus (4.56 GPa,) flexural strength (75 MPa), and so on. All these data are very much useful, if these composites are used in the manufacturing of components like space shuttle, engine cover, heaters, brake pad, cryogenic fuel tank, etc. in engineering applications.
PubDate: 2022-11-08

• Author Correction: Synthesis, Structural and Optical Properties of Er and
V Codoping ZnO Nanoparticles

PubDate: 2022-11-04

• Microwave Assisted Green Synthesis of Silver Nanoparticles and Its
Application: A Review

Abstract: Green technology has become a wide range of demand nowadays, it has become very important to synthesised the various nanoparticles. This review mainly focuses on the applications of silver nanoparticles, synthesised through microwave and this shows the various applications in the field of pharma as well as in medical sciences. AgNPs have been investigated by various researchers due to its unique properties, electronic and chemical properties. The AgNPs is one of the inorganic nano- material and gives various applications like antimicrobial, antioxidant, antifungal, anticancer, antidiabetic, bone healing property, nematicidal and anthelmintic activity, in water treatment, antiviral activity and also used as sensors and it has many advantages in every field and can be synthesised easily by using plant parts extract which will give different size, shape, structure and activity of Silver nanoparticles.
PubDate: 2022-11-04

• Effect of Alkyl Chain Length of Amines on the Micro-structural and
Magnetic Properties of Stabilized Ni-NiO Nanoparticles

Abstract: Different long-chain primary alkylamines such as octylamine, dodecylamine, tetradecylamine, hexadecylamine or octadecylamine were used to stabilize Ni-NiO nanoparticles (metal:stabilizer ratio of 1:10) by an organometallic method in organic medium to evaluate their effect on the microstructural and magnetic properties. The Ni-NiO stabilized nanoparticles were characterized by Fourier transformed infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), conventional transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD) and dynamic light scattering (DLS). The results indicated an adequate stabilization of Ni nanoparticles with the different primary alkylamines. The semi-quantitative analysis suggests that Ni surface composition is a combination of the metallic state with NiO, NiOOH and NiO, but the chain length modified the content and proportion of these compounds. The highest Ni metallic state (57.2 at. %) was obtained with tetradecylamine as stabilizer. The morphology of the samples is similar to a core–shell semi-spherical, but the particle size tends to reduce with the alkyl chain length of primary amines from 20 to 8 nm. The saturation magnetization (Ms) showed important variations depending on the surface composition, for which variable particle size and Ni metallic content were determining factors for the magnetic response.
PubDate: 2022-11-04

• Correction: Facile Synthesis and Antibacterial Activity of Bioplastic
Membrane Containing In Doped ZnO/Cellulose Acetate Nanocomposite

PubDate: 2022-11-01

• Structural Engineering of ZnO–SnO2–Ag(AgCl) Nanocomposites for
the Medical Applications

Abstract: ZnO–SnO2–Ag(AgCl) nanocomposites consisting of hexagonal ZnO, tetragonal SnO2, metallic Ag and AgCl nanocrystals were prepared by wet polymer-salt synthesis. The materials were studied using optical and luminescent spectroscopy, SEM, EDS and XRD analysis. The ability to generate chemically active singlet oxygen and antibacterial activity of prepared materials against both gram-positive and gram-negative bacteria were tested. It was showed that Ag structural transformation starts in initial composite solutions and proceeds at all stages including drying and thermal treatment of ZnO–SnO2–Ag(AgCl) synthesis. During this transformation, Ag exists in different forms (ions, molecular clusters, metallic and salt (AgCl) nanoparticles) and structural states (free Ag+ ions and Ag-PVP complexes in the solutions; Ag+ ions embedded into oxides crystal matrices; molecular clusters in the solutions and in PVP-salt composites; nanoparticles). Synthesized ZnO–SnO2–Ag(AgCl) powders consist of small (about 50 nm) nanoparticles—“nanogenerators” of chemically active singlet oxygen. This provides high antibacterial activity of these materials against both gram-positive and gram-negative bacteria.
PubDate: 2022-11-01

• Preparation of Nano-SiO2 by Silica Sol In-Situ Complexation Protective
Precipitation Method

Abstract: In this study, nanosilica particles were prepared from self-made silica gel under the protection of citric acid in situ complexation and ethyl acetate as the latent acid reagent. The effects of ethyl acetate, citric acid, reaction temperature, and reaction time on the particle size of nanosilica were studied. The optimum process parameters were determined as follows: Vethyl acetate: Vsilica sol = 9:50, citric acid addition amount 3.64%, reaction time 8 h, and reaction temperature 70 °C. The products were characterized by IR, XRD, SEM and TEM analyses. The results show that the nano-silica particles prepared by complexation precipitation method employing silica sol as silicon source has good dispersion with average particle size controlled about 19.44 nm. The method has numerous advantages over the conventional inverse extraction method under colloid protection, and is expected to achieve industrial production.
PubDate: 2022-11-01

• Graphene Oxide Decorated Tin Sulphide Quantum Dots for Electrochemical
Detection of Dopamine and Tyrosine

Abstract: The current study highlights the design and construction of a sensitive and selective sensor for detection of dopamine and tyrosine using a GO-SnS2 quantum dots by a drop casting method on glassy carbon electrode. Highly porous nano-crystalline GO-SnS2 quantum dots were synthesized by using ultrasonication followed by hydrothermal method in a facile manner. XRD, SEM, XPS, TEM, and pore size distribution techniques were used to characterize the quantum dots that were produced. The newly fabricated electrode was evaluated for EIS (Electrochemical impedance spectroscopy), CV (cyclic voltammetry) and chronoamperometric methods. The observed limit of detection of dopamine was observed to be 26 nM. High selectivity and sensitivity were observed for electrochemical detection of dopamine and tyrosine.
PubDate: 2022-11-01

• Green Synthesis of Chitosan–Selenium Bionanocomposite with High
Biocompatibility and Its Marked Impact on Las B and RhII Genes Expression
in Pseudomonas aeruginosa

Abstract: In this present study, quorum quenching activity (QQ) of chitosan–selenium bionanocomposite with high biocompatibility was investigated. QQ activity was studied in Pseudomonas aeruginosa by measuring the expression level of Las B and RhII genes. Impact of gene expression on the major virulence factors production was also evaluated. Relative gene expression of both the genes was significantly reduced in all the dosages of CS–SeNC treatment, with subsequent reduction in the production of all the tested virulence factors. Biocompatibility of the nanocomposite was checked in zebrafish model which reveals that the administrated nanocomposite was not shown any undesirable effect on apoptosis, oxidative stress gene expression and liver histology. The present study implies that CS–SeNC prepared by in situ green science principles is a promising antibacterial agent against multiple drug-resistant bacterial strains, which exhibit an antagonistic effect by inhibiting the molecular mechanism of pathogenesis with noteworthy biocompatibility. Graphical
PubDate: 2022-11-01

• Nanoarchitectonics and Electrochemical Behavior of Cu Doped h-MoO3 as an
Electrode Material for Energy Storage Applications

Abstract: With the objective of development of electrochemical charge storage devices, currently the research in this field is centred on the study of MoO3 nanoparticles doped with copper as an efficient supercapacitor electrode material. The synthesized nanoparticles were examined by powder X-ray diffraction which determined the metastable hexagonal phase of MoO3 and their morphologies were examined using scanning electron microscopy displaying regularly arranged well-defined microrods. The typical vibrational bands of Mo–O were identified from Infra-red and Raman spectral analysis. The ultra violet diffuse reflectance spectra revealed the decrease in optical band gap from 2.96 to 2.78 eV with an increase in Cu concentration. The surface area was recorded to be higher for 5% wt Cu doped nanoparticles (14 m2/g) which was examined from Brunauer–Emmett–Teller (BET) isotherms. Electrochemical behaviour of the nanoparticles was probed by cyclic voltammetry (CV) and electrochemical impedance spectroscopy measurements for which a maximum specific capacitance (Csp) value of 530 Fg−1 was achieved for 5% wt Cu doped MoO3 nanoparticles.
PubDate: 2022-11-01

• Single-Walled Carbon Nanotubes in Nanosized Basalts as Nanocomposites: The
Electrical/Dielectric Properties and Electromagnetic Interference
Shielding Performance

Abstract: About 90 of the volcanic rocks worldwide are basalt rocks utilized to produce basalt fibers. They are considered insulators electrically. Herein, the basalts’ electrical/dielectric properties have been significantly enhanced by introducing single-walled carbon nanotubes (SWCNT) to the basalt nanosized. We obtained nanosized basalt powders using ball milling with an average particle size of 67.86 nm. The basalt nano-powders were suspended on ethanol and mixed with SWCNT under rigorous sonication and stirring. Basalt/SWCNT nanocomposites were produced with SWCNT ratios 0, 1, 3, and 5 wt%. We evaluated their electrical conductivity, dielectric constant, and dielectric loss at different frequencies and temperatures ranging from room temperature (RT) to 1200 Kelvin. The results at 20 kHz revealed that the pure basalts’ electrical conductivity was 1.16 × 10–7 S/cm at RT. At the same time, it was 0.03, 0.19, and 0.46 S/cm for the basalt/SWCNT nanocomposites at the SWCNT ratios 1, 3, and 5 wt%, respectively. These results proved that the basalts turned from insulators to become conductors even at the lowest ratio of SWCNT, i.e., 1 wt%. The basalt/SWCNT nanocomposites’ dielectric constant increased thousands of folds compared with pure basalts. Besides, theoretical calculations demonstrated a superior electromagnetic interference shielding (EMI) performance for the prepared nanocomposites. This study’s findings could open new horizons for using SWCNT in basalt for EMI shielding applications. Graphical Basalt/SWCNT nanocomposites were prepared and showed dramatically enhanced electrical conductivity, dielectric constant, and good EMI shielding performance.
PubDate: 2022-11-01

• Synthesis of Hierarchical Porous MOFs via Ligand Thermolysis for
High-Performance Supercapacitor

Abstract: As an attractive electrode material of supercapacitors, metal organic frameworks (MOFs) have been greatly exploited. However, the nearly exclusive microporous structure prevented their advantages from being fully utilized, restraining their electrochemical performance. In this work, a hierarchical porous Zr-MOF (HP-Zr-MOF) was prepared via ligand thermolysis method, and its electrochemical performance was investigated. HP-Zr-MOF exhibits a high specific capacitance (492.7 F g−1, 1 A g−1), and good rate performance (362.5 F g−1, 10 A g−1). An asymmetric supercapacitor based on HP-Zr-MOF and activated carbon electrodes was assembled, which delivers a specific capacitance of 107.5 F g−1, and an energy density of 38 Wh kg−1 with a power density of 1341 W kg−1 at 1 A g−1, showing prospective prospect of hierarchical porous MOFs-based electrodes in energy storage application.
PubDate: 2022-11-01

• The Vital Role of TiO2 on the Bioglass System P2O5-CaO-B2O3-SiO2- K2O for
Optics and Shielding Characteristics

Abstract: Using the melt-quenching methodology, bioglass samples manufactured of 28B2O3–14SiO2–15CaO–18 –18 P2O5 –25−x K2O − x TiO2, $$x$$ = (0 ≤ $$x$$  ≤ 5 mol. %) were prepared for use as optics and shields. According to the Ti content values, the investigated samples were labelled as CPBKSTi0, CPBKSTi1, CPBKSTi2, CPBKSTi3, & CPBKSTi5. The addition of TiO2 increased the density (ρ), while lowering the molar volume ( $${V}_{m}$$ ). The optical bandgap ( $${E}_{opt.}^{indir})$$ & ( $${E}_{opt.}^{dir}),$$ the Urbach energy ( $${E}_{u}$$ ), the refractive index, ( $${n}_{D}$$ ), and other features of the glass system were calculated using the UV–VIS–NIR spectrum. Radiation shielding parameters like half -value layer, mass attenuation coefficient, mean free path, and effective atomic number were calculated, indicating that adding TiO2 improved the attenuation performance of these glasses Cosmetic, dental prosthetics, and orthopedic implants are just a few of the applications for the current glasses.
PubDate: 2022-11-01

• Hollow Hierarchical Cu-BTC as Nanocarriers to Immobilize Lipase for
Electrochemical Biosensor

Abstract: Enzyme sensors have been widely applied to the detection of various analytes, However, poor stability under harsh conditions and difficulty to recycle restrict the application of the enzyme. We utilizing the advantage of the designable structure of MOFs synthesized hollow hierarchical porous Cu-BTC with cuprous oxide (Cu2O) as the template to immobilize the enzyme, which significantly increased the enzyme loading capacity, about 1.89 times that of microporous Cu-BTC. Compared to the free CRL, the HH-Cu-BTC immobilized CRL (CRL@HH-Cu-BTC) demonstrated excellent pH resistance, thermal stability, and recyclability, since the HH-Cu-BTC with hollow hierarchical porous provided a great microenvironment for CRL. CRL@HH-Cu-BTC was eventually applied for the electrochemical biosensor of diphenyl ether pesticide (nitrofen). The fabricated biosensors showed a linear detection range of (0–78 µM), a LOD of 1.15 µM, and great recovery, with the advantages of low cost, fast response, and convenient device assembly.
PubDate: 2022-11-01

• Microbial Mediated Synthesis of Zinc Oxide Nanoparticles, Characterization
and Multifaceted Applications

Abstract: Nanoparticles have gained considerable importance compared to bulk counterparts due to their unique properties. Due to their high surface to volume ratio and high reactivity, metallic and metal-oxide nanostructures have shown great potential applications. Among them, zinc oxide nanoparticles (ZnONPs) have gained tremendous attention attributed to their unique properties such as low toxicity, biocompatibility, simplicity, easy fabrication, and environmental friendly. Remarkably, ZnONPs exhibit optical, physical, antimicrobial, anticancer, anti-inflammatory and wound healing properties. These nanoparticles have been applied in various fields such as in biomedicine, biosensors, electronics, food, cosmetic industries, textile, agriculture and environment. The synthesis of ZnONPs can be performed by chemical, physical and biological methods. Although the chemical and physical methods suffer from some disadvantages such as the involvement of high temperature and pressure conditions, high cost and not environmentally friendly, the green synthesis of ZnONPs offers a promising substitute to these conventional methods. On that account, the microbial mediated synthesis of ZnONPs is clean, eco-friendly, nontoxic and biocompatible method. This paper reviews the microbial synthesis of ZnONPs, parameters used for the optimization process and their physicochemical properties. The potential applications of ZnONPs in biomedical, agricultural and environmental fields as well as their toxic aspects on human beings and animals have been reviewed.
PubDate: 2022-11-01

• ZrO2/C3N4 Nanocomposites: Green Solid-State Grinding Synthesis,
Characterization, and Photocatalytic Degradation of MB Dye

Abstract: ZrO2/carbon nitride (C3N4) composite photocatalysts were prepared by solid-state grinding and subsequent calcination. They were characterized by X-ray diffraction, scanning electron microscopy, UV–Vis diffuse reflectance spectroscopy, and photoluminescence spectroscopy. Their photocatalytic activity was evaluated by the degradation of methylene blue (MB). Results showed that the grain size of the C3N4/ZrO2 composite photocatalyst was relatively small at about 10 nm. HRTEM showed that a heterojunction was formed between ZrO2 and g-C3N4. Under the assistance of H2O2, the visible-light degradation activity of MB by the composites was much higher than that by pure ZrO2. The 9%g-C3N4/ZrO2 composite photocatalyst had the best photocatalytic performance, and it could degrade 99% of MB in 60 min. Adding a small amount of NaCl to the solution had a significant effect on the photocatalytic effect of the composite. Such addition could inhibit the photocatalytic activity of samples with high C3N4 content and significantly improve the performance of photocatalysts with low C3N4 content. The 1%g-C3N4/ZrO2 composite (assisted by H2O2) had the best photocatalytic effect on the MB solution containing salt. It could degrade MB solution containing 0.15, 0.3, and 0.6 g/L NaCl within 30, 40, and 45 min, respectively.
PubDate: 2022-10-18

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