Polymer Science, Series A

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Polyelectrolyte Complexes of Partially Betainated Chitosan Derivatives Soluble in Weakly Alkaline Media
Polymer Science, Series A - Tập 62 Số 3 - Trang 162-173 - 2020
И. В. Благодатских, O. V. Vyshivannaya, Н. А. Самойлова, Evgeniya A. Bezrodnykh, Zinaida S. Klemenkova, Vladimir N. Kuryakov, В. Е. Тихонов, Alexei R. Khokhlov
Solid-phase extrusion of polyamide under simple shear
Polymer Science, Series A - Tập 51 - Trang 916-922 - 2009
V. A. Beloshenko, A. V. Voznyak, Yu. V. Voznyak
The advantages of new simple-shear methods of severe plastic deformation (equal-channel multiple angular extrusion, T-type extrusion, and twist extrusion) are examined for polyamides from the viewpoint of the structural modification of flexible-chain semicrystalline polymers. The effect of the deformation scheme and mode and the extrusion temperature and rate on the physicomechanical characteristi...... hiện toàn bộ
Prediction of glass transition temperatures of polyquinolines and polyquinoxalines
Polymer Science, Series A - Tập 54 - Trang 48-60 - 2012
Yanli Liu, Zhengde Tan, Shihua Zhang
Two molecular descriptors calculated directly from repeating units were used to predict the glass transition temperature (T g) values of polyquinolines and polyquinoxalines. These polymers were randomly divided into a training set (44 polymers) and a test set (19 polymers). By applying stepwise multiple linear regression analysis, the training set was used to construct a quantitati...... hiện toàn bộ
Effect of the montmorillonite cloisite 15A on the structure and properties of poly(1-butene)
Polymer Science, Series A - Tập 54 - Trang 493-498 - 2012
G. Kh. Idiyatullina, S. I. Vol’fson, R. K. Sabirov, R. S. Yarullin
The structure and properties of nanocomposites based on poly(1-butene) and the nanoclay Cloisite 15A are studied. The nanoclay introduced into poly(1-butene) (5 wt %) is an efficient additive that improves mechanical and thermal properties of poly(1-butene).
The effect of electric discharges on electrophysical properties of polymer blends
Polymer Science, Series A - Tập 52 - Trang 295-298 - 2010
A. A. Aliev, O. A. Ledneva, A. A. Popov
The electric aging of HDPE-PP blends obtained from melt and PS-PVC blends prepared from solution is studied in the range of low (0.1–10 wt %) concentrations of the second component. It is found that the addition of a minor amount of PE (1–2 wt %) to PP significantly intensifies changes in the electric properties and erosion of PP. For a PS-PVC blend, the addition of small (up to 1 wt %) amounts of...... hiện toàn bộ
Phase transitions in solutions of polystyrene with poly(methyl methacrylate) and polybutadiene under deformation
Polymer Science, Series A - - 2006
E. V. Rusinova, L. V. Adamova, С. А. Вшивков
The effect of the polymerization mechanism on the microstructure of chains and the rheology of polyacrylonitrile solutions
Polymer Science, Series A - Tập 53 - Trang 289-295 - 2011
N. M. Bol’bit, E. A. Dubova, V. R. Duflot, V. A. Chevychelov
The analysis of theoretical published data and our experimental data makes it possible to assume that the main difference between polyacrylonitriles prepared via emulsion and solution polymerization appears at the stage of synthesis. This difference is likely related to the freezing of the segmental mobility of strongly sorbed two-dimensional chains that grow in a reaction gap of the latex polymer...... hiện toàn bộ
Temperature dependence of the structure of a carbosilane dendrimer with terminal cyanobiphenyl groups: Molecular-dynamics simulation
Polymer Science, Series A - Tập 55 - Trang 53-60 - 2013
D. A. Markelov, M. A. Mazo, N. K. Balabaev, Yu. Ya. Gotlib
The molecular-dynamics simulation of the structure and molecular mobility of an individual macromolecule of a fourth-generation carbosilane dendrimer with terminal cyanobiphenyl groups in a highly diluted chloroform solution in the range 213–323 K is performed. Upon a change in temperature, the dendrimer undergoes structural rearrangement that depends on the ability of terminal segments to penetra...... hiện toàn bộ
Methacrylate Single-Ion Conducting Block Copolymers: Effect of the Chemical Structure on Conductivity and Morphological Organization
Polymer Science, Series A - - 2023
Elena I. Lozinskaya, Denis O. Ponkratov, Alexander S. Shaplov, I. A. Malyshkina, D. R. Streltsov, Artem V. Bakirov
The study of sorption and transport properties of membranes containing polyaniline
Polymer Science, Series A - Tập 52 - Trang 856-863 - 2010
A. Yu. Pulyalina, G. A. Polotskaya, L. M. Kalyuzhnaya, N. N. Saprykina, I. G. Sushchenko, T. K. Meleshko, A. M. Toikka
The transport properties of membranes based on polyimide-polyaniline composites are studied in the pervaporation separation of a methanol-toluene binary azeotropic mixture. The morphology of the membranes is investigated by electronic microscopy, and the wettability of their surface is analyzed by contact-angle measurements. Special attention is given to the study of sorption and diffusion charact...... hiện toàn bộ
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