Subjects -> MANUFACTURING AND TECHNOLOGY (Total: 362 journals)
    - CERAMICS, GLASS AND POTTERY (31 journals)
    - MACHINERY (34 journals)
    - MANUFACTURING AND TECHNOLOGY (223 journals)
    - METROLOGY AND STANDARDIZATION (5 journals)
    - PACKAGING (19 journals)
    - PAINTS AND PROTECTIVE COATINGS (4 journals)
    - PLASTICS (42 journals)
    - RUBBER (4 journals)

PLASTICS (42 journals)

Showing 1 - 32 of 32 Journals sorted alphabetically
ACS Applied Polymer Materials     Hybrid Journal   (Followers: 9)
Acta Polymerica     Hybrid Journal   (Followers: 9)
Additives for Polymers     Full-text available via subscription   (Followers: 20)
Advanced Industrial and Engineering Polymer Research     Open Access   (Followers: 4)
Advances in Polymer Technology     Open Access   (Followers: 13)
Chinese Journal of Polymer Science     Hybrid Journal   (Followers: 9)
Cirugia Plastica Ibero-Latinoamericana     Open Access  
European Polymer Journal     Hybrid Journal   (Followers: 44)
International Journal of Biobased Plastics     Open Access   (Followers: 2)
International Journal of Polymeric Materials     Hybrid Journal   (Followers: 6)
International Polymer Processing     Full-text available via subscription   (Followers: 1)
Iranian Journal of Polymer Science and Technology     Open Access   (Followers: 1)
Journal of Applied Polymer Science     Hybrid Journal   (Followers: 114)
Journal of Inorganic and Organometallic Polymers and Materials     Hybrid Journal   (Followers: 8)
Journal of Polymer Research     Hybrid Journal   (Followers: 7)
Journal of Polymer Science Part C : Polymer Letters     Hybrid Journal   (Followers: 5)
Journal of Polymers and the Environment     Hybrid Journal   (Followers: 1)
Majalah Kulit, Karet, dan Plastik     Open Access  
Microplastics and Nanoplastics     Open Access  
Plastic and Polymer Technology     Open Access   (Followers: 40)
Plastic and Reconstructive Surgery     Hybrid Journal   (Followers: 30)
Plastics Engineering     Partially Free  
Polymer     Hybrid Journal   (Followers: 86)
Polymer Bulletin     Hybrid Journal   (Followers: 7)
Polymer Engineering & Science     Hybrid Journal   (Followers: 15)
Polymer Science Series B     Hybrid Journal   (Followers: 4)
Polymer Science Series C     Hybrid Journal   (Followers: 3)
Polymer Science Series D     Hybrid Journal   (Followers: 3)
Polymer Science, Series A     Hybrid Journal   (Followers: 3)
Polymer-Plastics Technology and Materials     Hybrid Journal   (Followers: 5)
Reinforced Plastics     Full-text available via subscription   (Followers: 17)
SPE Polymers     Open Access  
Similar Journals
Journal Cover
Polymer Science Series B
Journal Prestige (SJR): 0.27
Citation Impact (citeScore): 1
Number of Followers: 4  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1560-0904 - ISSN (Online) 1555-6123
Published by Springer-Verlag Homepage  [2471 journals]
  • Thiol-Ene “Click Reactions” as a Promising Approach to Polymer
           Materials

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      Abstract: This review is devoted to relatively new and promising approach to the synthesis of novel organic compounds and polymer materials, based on the “click chemistry” concept. Several types of the “click reactions” (cycloaddition, nucleophilic ring opening, non-aldol carbonyl chemistry, and addition to multiple carbon-carbon bonds) have been described, and the relevant examples have been provided. The “thiol-ene” reactions based on the addition of thiol to unsaturated functional groups of organic molecules have been mostly considered in this review, including their conditions and mechanisms. Diverse and wide range of applications of the thiol-ene “click chemistry” has been demonstrated, including the preparation of biocompatible materials and materials for culture and encapsulation of cells; the synthesis of block copolymers; the development of degradable materials as well as novel homogeneous and hybrid network structures; chromatography, glycopolymer synthesis, immobilization of proteins, stabilization/functionalization of capsules and multilayer systems, functionalized micro- and nanogels, nanomedicine, and development of antitumor drugs.
      PubDate: 2021-12-28
       
  • New Macromolecular Ligands with Main-Chain Pyridylquinoline Units and
           Their Metal-Polymer Complexes with Europium

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      Abstract: A number of copolyamides containing main-chain pyridylquinoline groups were synthesized, and their metal-polymer complexes with europium were obtained. All the synthesized polymers exhibited high stress-strain characteristics and thermal stability, and their metal-polymer complexes with europium showed intense luminescence in the 610–620 nm region.
      PubDate: 2021-12-28
       
  • Microporous Polymers Based on Rigid-Chain Di- And Triacetyl Aromatic
           Compounds

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      Abstract: — Polycondensation of rigid-chain di- and triacetylarenes and their copolycondensation has afforded three-dimensional polymers via the formation of 1,3,5-phentriyl and dipnone moieties. The influence of the monomers structure on the polymers properties has been analyzed. Additional thermal treatment at 450оC has afforded microporous polyphenylenes with phentriyl branching fragments exhibiting intrinsic surface area of 650–690 m2/g.
      PubDate: 2021-12-20
       
  • Synthesis of Photosensitive Styrene Copolymers with p-Phenyl-Substituted
           Cyclopropyl Methacrylates

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      Abstract: — Radical polymerization of p-phenyl-substituted cyclopropyl methacrylates with styrene has been performed. A novel cyclopropane-containing negative-type photosensitive copolymer has been obtained. Composition and structure of the obtained copolymer have been elucidated. Relative reactivity constants of the monomers have been determined and the Alfrey–Price Q‒e parameters have been calculated. Dependence of the photosensitivity on the copolymer composition has been revealed. The synthesized copolymer has exhibited the photosensitivity of 55.3‒56.0 cm2/J and can be used for the creation of negative photoresist material.
      PubDate: 2021-12-20
       
  • Novel Polyetherimides Based on 5-Methyl-1,3-phenylene-bis-4-oxyphthalic
           Acid Dianhydride: Synthesis and Physicochemical Properties

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      Abstract: — A novel monomer for the synthesis of polyimides, 5-methyl-1,3-phenylene-bis-4-oxyphthalic acid dianhydride was developed. The synthesis was carried out in three stages: the reaction of nucleophilic nitro substitution of 4-nitrophthalonitrile with 5‑methylresorcinol (orcinol) potassium salt and subsequent hydrolysis of the nitrile groups have afforded 5‑methyl-1,3-phenylene-bis-4-oxyphthalic acid, dehydration of which has given the corresponding dianhydride. A series of new thermoplastic high molecular weight polyetherimides based on 5-methyl-1,3-phenylene-bis-4-oxyphthalic acid dianhydride and several aromatic diamines of various structures were synthesized by the method of one-stage catalytic polycondensation in a benzoic acid melt. Inherent viscosity and weight-average molecular mass of the polyetherimides have been of 0.28‒1.20 dL/g and (33‒114) × 103, respectively. The polyetherimides have been soluble in chloroform, THF, DMF, DMAA, N-methylpyrrolidone, and DMSO and have revealed film-forming properties. According to the DSC and wide-angle X-ray scattering data, the polyetherimides have been found completely amorphous, the glass transition temperature being in the 185–307°C range.
      PubDate: 2021-12-20
       
  • Temperature-Dependent Studies on Electrical Properties of ZnCl2 Doped
           Polyaniline

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      Abstract: Polyaniline (PANI) and PANI/ZnCl2 composites were synthesized by chemical method and characterized by FTIR and SEM to confirm the formation of the composite. DC Current–Voltage and temperature-dependent electrical properties have been studied to explore the conduction mechanism. FTIR spectra of PANI showed all standard peaks and PANI/ZnCl2 sample showed peaks with a slight shift in wavelength position. SEM image of pure PANI illustrated as a cauliflower-like structure of around 20 μm whereas PANI/ZnCl2 confirms the encapsulation of ZnCl2 particles in the PANI matrix. The electrical conductivity of both the samples decreased concerning a decrease in temperature. Activation energy for both PANI (0.52 eV) and PANI/ZnCl2 (0.38 eV) composites was also calculated. Therefore, it is indicated that the presence of ZnCl2 in the PANI matrix reduces the activation energy. Hence, ZnCl2 doped PANI is best suitable for semiconductor device applications.
      PubDate: 2021-09-01
       
  • Polyelectrolytes and Polycomplexes for Stabilizing Sandy Grounds

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      Abstract: Interaction of the anionic copolymer of acrylic acid and acrylamide with a molar ratio of monomer units of 75 : 25 and poly(N,N′-diallyl-N,N′-dimethylammonium chloride) in aqueous solution is studied. The interaction is accompanied by the formation of a polycomplex stabilized by multiple salt bonds between oppositely charged groups of both polyelectrolytes. A nonstoichiometric polycomplex with a tenfold excess of anionic groups is present in solution in the form of particles with a diameter of about 300 nm; the particles retain their aggregate stability for 30 days. The application of aqueous solutions of individual polymers and the nonstoichiometric polycomplex on the surface of sand with a particle size of 0.15 ± 0.05 mm is associated with the formation of composite polymer-sand coatings. The highest mechanical strength is possessed by coatings with the participation of an anionic copolymer and a polycomplex. For sand and polycomplex coatings, the weight loss during water treatment is 10%, which is lower than that in the case of traditional polyacrylamide soil stabilizer. The polycomplex at a concentration of up to 0.33 wt % does not exhibit toxicity to microorganisms, thereby indicating that the use of a negatively charged polycomplex is promising for obtaining waterproof protective coatings on the surface of sandy soils.
      PubDate: 2021-09-01
       
  • Synthesis and Characterization of Schottky Diodes from Polyaniline Doped
           with Trifluoroacetic Acid

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      Abstract: In this paper we report the fabrication of Schottky barriers using polyaniline (PANI) doped with trifluoroacetic acid (TFA). The PANI doped with TFA (PANI-TFA) was prepared by chemical oxidative polymerization using an indirect synthetic route known as doping-dedoping-redoping. The structural, morphological, optical and thermal properties of the obtained doped polyaniline (PANI-TFA) were studied by FTIR, SEM, UV−Vis-NIR, and TGA and DSC, respectively. Its electrical conductivity was measured at room temperature with a four-probe method. FTIR and UV−Vis-NIR analysis confirmed the structure and the doping of the emeraldine base by the trifluoroacetic acid. Four-probe measurements showed that the electrical conductivity of the PANI-TFA sample was around 0.226 S/cm. In addition, a Schottky diode with configuration Al/PANI-TFA/Ag was fabricated. Current–voltage (I−V) and capacitance–voltage–frequency (C−V−f) measurements were used to characterize the fabricated Al/PANI-TFA/Ag device. It was found that the (I−V) plot was nonlinear and asymmetric and the (1/C2−V) plots were almost linear in reverse bias voltage indicating that the Al/PANI-TFA/Ag device exhibited behavior similar to a diode with rectification behavior and followed the modified Schottky diode equation. The diode parameters, including the ideality factor, barrier height, saturation current and carrier concentration, were calculated using the modified Shockley equation.
      PubDate: 2021-09-01
       
  • Electrical, Structural, and Thermo-Electric Power Studies of
           Polypyrrole-MnO2 Composites

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      Abstract: In situ polymerization of pyrrole was carried out with manganese dioxide, in the presence of an oxidizing agent ammonium persulfate, in order to synthesize polypyrrole/manganese dioxide composites, by the chemical oxidation method. The polypyrrole/manganese dioxide composites were synthesized with different concentrations viz., 10 and 15 wt % of manganese dioxide in pyrrole. SEM and XRD analyses were done on polypyrrole and polypyrrole/manganese dioxide composites. The results of Seebeck coefficient, thermo-electric power factor, A.C. conductivity and dielectric properties values for the polypyrrole/manganese dioxide composites have demonstrated a strong dependence on the weight percent of manganese dioxide in the pure polypyrrole. The results of Seebeck coefficient have indicated a linear relationship between Seebeck coefficient, temperature gradient and the content of manganese dioxide in the polypyrrole as well.
      PubDate: 2021-09-01
       
  • Synthesis of Phenylboronic Acid-Based Microgels and Their
           Glucose-Responsive Properties

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      Abstract: In this article, glucose-responsive polymers were synthesized by introducing hydrophilic monomer N-vinyl-2-pyrrolidone and amino-containing monomer N,N-dimethylaminopropyl acrylamide to make phenylboronic acid-based polymers able to response in physiological temperature and physiological pH. The chemical structure of the polymer was confirmed by NMR spectroscopy. The aqueous solutions of polymer were characterized by lower critical solution temperature, which increased with rise of glucose concentration. Further, the glucose-sensitive microgels were prepared by reversed-phase microemulsion method. The results showed that the microgels could response at physiological environment and the particle size of microgels increased with increasing glucose concentration.
      PubDate: 2021-09-01
       
  • Biocidal Copolymers of Methacryloylguanidine Hydrochloride with
           Methacrylamide and Diallyldimethylammonium Chloride

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      Abstract: The copolymers of methacryloylguanidine hydrochloride with methacrylamide and diallyldimethylammonium chloride are synthesized by radical polymerization. The reactivity ratios of these monomers are determined, and the dependence of the biocidal activity of the copolymers on the structure of the macromolecule chain is studied. It is shown that manifestation of the biocidal activity is determined not only by the composition of the copolymer but also by the nature of the distribution of methacryloylguanidine hydrochloride units along the macromolecule chain.
      PubDate: 2021-09-01
       
  • Determination of Lignin Content in Plant Materials Using Solid-State 13C
           NMR Spectroscopy

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      Abstract: The article shows the possibilities of solid-state (СP MAS) 13С NMR spectroscopy for determination of lignin content in a wide range of lignocellulosic materials: wood of various tree species and plant waste. The analysis is based on the use of the dependences of the integral intensity of 13C NMR signals due to aromatic or methoxy carbon atoms of lignin on its percentage in mixtures with cellulose. The lignin content obtained by 13С NMR spectroscopy is in good agreement with the published data and the results obtained using acid hydrolysis of the corresponding samples of lignocellulosic biomaterials.
      PubDate: 2021-09-01
       
  • Modification of the Nafion Membrane Using a Chitosan Solution in Carbonic
           Acid under Pressure

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      Abstract: Chitosan is a promising biopolymer for coating separation membranes of redox flow batteries. Its deposition from a carbonic acid solution under pressure on the Nafion membrane leads to a 1.7-fold reduction in ionic permeability with a slight (6%) decrease in proton conductivity. The discovered effect is a consequence of the penetration of dissolved chitosan molecules under pressure into the membrane owing to which the homogeneity of the material in the contact area of two polymers increases and, as a consequence, the selectivity of the transport characteristics of the membrane improves. The modified composite separator is tested in a real redox flow battery and is shown to increase its energy efficiency.
      PubDate: 2021-09-01
       
  • Synthesis and Adsorption Behavior of Chitosan Graft Poly(acrylic
           acid)/Graphite Oxide/Attapulgite Composite Hydrogel

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      Abstract: Chitosan graft poly(acrylic acid)/graphite oxide/attapulgite (CTS-g-PAA/GO/APT) composite hydrogel has been synthesized and used to remove rhodamine B (RB) and methyl orange (MO) from aqueous solutions through adsorption. The composite is characterized by infrared spectroscopy (IR), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). The influence of adsorption conditions, i.e., the content of graphite oxide (GO) and attapulgite (ATP), the initial concentration of dye solutions, the adsorption time, ionic strength, pH values and dosage of the composite, on the adsorption capacities has been studied in detail. It is found that small amount of GO and ATP can improve the adsorption capacities of dyes significantly. Adsorption capacities of RB and MO onto CTS-g-PAA graft copolymer are 36.7 and 56.4 mg/g, respectively, while those onto CTS-g-PAA/GO/APT (GO 0.02 g, APT 0.05 g) composite hydrogel are 92.6 and 186.5 mg/g, respectively. Adsorption isotherms and thermodynamics are discussed. It indicates that the adsorption of RB is in accordance with both the Langmuir and R-P isotherm equations. However, that of MO meets the R-P equation. The adsorption of RB is spontaneous, while that of MO is not. Kinetic studies show that the adsorption of both RB and MO is in accordance with the Lagergren pseudo first-order kinetic model.
      PubDate: 2021-09-01
       
  • Effect of the Chemical Structure of Chitosan Copolymers with Oligolactides
           on the Morphology and Properties of Macroporous Hydrogels Based on Them

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      Abstract: Materials in the form of thermally crosslinked films and macroporous hydrogels based on graft copolymers of chitosan with lactide oligomers of various stereochemical compositions synthesized by solid-state reactive extrusion are obtained and studied. It is shown that the chemical structure of the copolymers and the molecular weight of the initial chitosan significantly affect the morphology and properties of the materials. The heterogeneous morphology of materials based on the semicrystalline lactide oligomer leads to a decrease in the efficiency of crosslinking of the materials during heat treatment and a higher degree of moisture absorption of macroporous hydrogels.
      PubDate: 2021-09-01
       
  • Influence of Thermal Curing on the Chemical Composition of Microphases and
           

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      Abstract: We present an experimental and theoretical investigation of the thermal and mechanical properties of modified polymer networks based on epoxy resin, 2,4-toluene diisocyanate, polytetramethylene oxide and dimethylbenzylamine. With variations in the curing temperature and the ratio of the diol, diisocyanate components and epoxy resin, epoxy urethane-containing isocyanurate polymers are modified. For reaction systems cured below 100°C, the polymers contain many flexible chain structures and become rubbery at ~60°C. A processing temperature above 120°C leads to a significant composition change, which affects the properties of the resulting systems. The glass transition temperature of the synthesized networks increases to 225°C. The elasticity modulus increases by 107%. The yield strength at compression with increasing curing temperature from 120 to 200°C is accompanied by improved mechanical and thermal properties of the samples. The yield strength is increased by 48%, the elastic modulus by 107%, the Brinell hardness by 40%, and the Shore hardness by 20%. The glass transition temperature increases to 225°C.
      PubDate: 2021-09-01
       
  • Biocidal Polymer Formulations and Coatings

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      Abstract: Using key publications, the review analyzes fundamental methods for synthesizing polymer biocides of varying chemical structure and discusses the mechanism behind the effect of the described formulations and their areas of application. High molecular weight compounds with inherent biocidal activity and opportunities for modification of polymers through chemical transformations or introduction of organic or inorganic additives are considered. The key focus of this review is on the analysis of approaches to the production of antibacterial coatings. Particular attention is given to the prospects of using cationic polyelectrolytes and metallopolymer compounds to which the resistance of pathogenic bacteria is not developed.
      PubDate: 2021-09-01
       
  • Synthesis and Metathesis Polymerization of New Monomer
           7-Trimethylsilyltricyclo[4.2.2.02,5]deca-3,9-diene

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      Abstract: The reaction of 1,3,5,7-cyclooctatetraene with silicon-substituted ethylenes has been studied for the first time. It is shown that vinyltrimethylsilane is inactive in the reaction, and vinyltrichlorosilane forms 7-trichlorosilyltricyclo[4.2.2.02,5]deca-3,9-diene in up to 12% yield. A new silicon-substituted monomer 7‑trimethylsilyltricyclo[4.2.2.02,5]deca-3,9-diene containing 92% of the endo-isomer has been synthesized by methylation of the chloroadduct. The metathesis polymerization of the final monomer mediated by the Grubbs Ru catalysts of the first and second generations is studied. A new poly(7-trimethylsilyltricyclo[4.2.2.02,5]deca-3,9-diene) containing a bulky bicyclic fragment and predominantly trans-double bonds in the main chain (up to 94%) is obtained in 90–96% yields. The polymer is characterized by the highest glass transition point (187°C) in the series of monotrimethylsilyl-substituted polynorbornenes. The double bonds present in the monomer unit open up prospects for further modification.
      PubDate: 2021-09-01
       
  • Gas Sensors Based on Conjugated Oligomers and Polymers as Promising
           Sensitive Elements for Toxic Gases Monitoring in the Atmosphere

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      Abstract: The review is devoted to conjugated oligomers and polymers used as functional materials in gas sensors based on organic field-effect transistors. The review lists the main types of sensors for portable gas analyzers, describes the parameters characterizing them, gives their main advantages and disadvantages. Gas sensors based on semiconducting polymers, oligomers and small molecules are presented. Methods of functional sensory layers formation as well as possible ways of increasing their sensitivity and selectivity are considered, mechanisms of sensory response are described. The most promising directions for further development of polymer gas sensors are suggested.
      PubDate: 2021-09-01
       
  • Antibacterial Activity of Polymer Blend Nanocomposites with the
           Incorporation of Bentonite and Gold Nanorods

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      Abstract: Polyvinyl alcohol/casein blend has been combined with bentonite and gold nanorods to prepare nanocomposite films. Gold nanorods have been synthesized using the seedless technique and have been characterized using the scanning electron microscopy and transmission electron microscopy techniques. The efficient incorporation of the nanoparticles in the matrix of the polymer blend has been confirmed by the UV‒Vis and FTIR spectroscopy. The nanocomposites also displayed an increase in thermal stability and they have been tested for their antibacterial efficacy against five bacterial strains (Staphylococcus aureus, Bacillus subtilis, Enterococcus faecalis, Escherichia coli, Klebsiella pneumonia). The results indicate that the antibacterial properties of these films have been enhanced to a great extent by the incorporation of minimal amount of gold nanorods into the polymer blend matrix.
      PubDate: 2021-09-01
       
 
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