Polymer Science, Series C最新文献_第6页

The Rheological Behavior of Polymer Solution Threads 聚合物溶液螺纹的流变行为

IF 2.2 4区化学

Polymer Science, Series C Pub Date : 2023-08-09 DOI: 10.1134/S1811238223700224

A. V. Subbotin, I. A. Nyrkova, A. N. Semenov

{"title":"The Rheological Behavior of Polymer Solution Threads","authors":"A. V. Subbotin, I. A. Nyrkova, A. N. Semenov","doi":"10.1134/S1811238223700224","DOIUrl":"10.1134/S1811238223700224","url":null,"abstract":"<p>Theoretical results of the authors in the field of the capillary thinning of polymer solution threads are reviewed. The dynamics of threads of both concentrated solutions without entanglements and dilute solutions, where hydrodynamic interactions play an important role, is considered. A molecular approach, in which macromolecules are simulated by a semiflexible chain, is used as a basis. This makes it possible to describe, from common positions, the nonlinear elasticity of solution and interactions taking into account the orientation of the chains. Particular attention is given to thread thinning in the region of the elastic behavior of solution where macromolecules unfold along the axis of stretching. The results of analysis of the capillary stability of a thread and conditions for solvent droplets emergence on its surface are presented, and the dynamics of formation of the hierarchical structure of beads-on-string droplets is viewed. Mechanisms behind the subsequent merging of droplets related to solvent overflow and droplets diffusion along the polymer string are discussed. The polymer string breakup occurs at time scales higher than the Rouse relaxation time of the polymer chain. String hardening and fiber formation may be an alternative.</p>","PeriodicalId":740,"journal":{"name":"Polymer Science, Series C","volume":"65 1","pages":"11 - 26"},"PeriodicalIF":2.2,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82661344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diblock Copolymer Melt in an Electric Field: Stability of the Homogeneous State in the Random Phase Approximation 电场中的双嵌段共聚物熔体:随机相近似下均匀态的稳定性

IF 2.2 4区化学

Polymer Science, Series C Pub Date : 2023-08-09 DOI: 10.1134/S1811238223700212

Yu. A. Kriksin, Y. V. Kudryavtsev

引用次数: 0

Polymetalorganosiloxanes as a Reflection of the Milestones in the Development of Advanced Technologies in the Chemistry of Silicones 反映有机硅化学先进技术发展里程碑的聚无机硅氧烷

IF 1.6 4区化学

Polymer Science, Series C Pub Date : 2023-08-09 DOI: 10.1134/S181123822370025X

O. A. Serenko

引用次数: 0

Macromolecular Systems of the Complex Architecture 复杂结构的大分子系统

IF 2.2 4区化学

Polymer Science, Series C Pub Date : 2022-12-20 DOI: 10.1134/S1811238222700205

引用次数: 0

Bending Rigidity of Branched Polymer Brushes with Finite Membrane Thickness 有限膜厚支化聚合物刷的弯曲刚度

IF 2.2 4区化学

Polymer Science, Series C Pub Date : 2022-09-21 DOI: 10.1134/S1811238222700199

I. V. Mikhailov, A. A. Darinskii, T. M. Birshtein

{"title":"Bending Rigidity of Branched Polymer Brushes with Finite Membrane Thickness","authors":"I. V. Mikhailov, A. A. Darinskii, T. M. Birshtein","doi":"10.1134/S1811238222700199","DOIUrl":"10.1134/S1811238222700199","url":null,"abstract":"<p>Nanomechanical properties and, in particular, the bending rigidity of natural and artifficial nanomembranes can be strongly affected by anchored or tethered macromolecules. We present the theory of the induced bending rigidity of polymer brushes symmetrically tethered to both surfaces of the membrane and immersed into the solvent. In contrast to previous works the finite thickness of the membrane was taken into account. The analytical and numerical variants of the self-consistent field approach were used. The mean and Gaussian Helfrich’s bending moduli as functions of the polymerization degree, branching parameter and grafting density of tethered macromolecules were determined both for good and theta solvent conditions. It was shown that the absolute values of the Helfrich’s bending moduli increase with the membrane thickness. The increase of the thickness leads also to the change of the relation between moduli for branched and linear brushes at the same polymerization degree and grafting density. For thin membranes the bending moduli for brushes with linear chains exceed those for branched brushes. However by an increase of the «bare» membrane thickness the moduli for brushes with branched macromolecules can become equal and even exceed those for brushes consisting of their linear analogs.</p>","PeriodicalId":740,"journal":{"name":"Polymer Science, Series C","volume":"64 2","pages":"110 - 122"},"PeriodicalIF":2.2,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5143387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Ionic Ring-Opening Polymerization for the Synthesis of Star-Shaped Polymers 离子开环聚合合成星形聚合物

IF 2.2 4区化学

Polymer Science, Series C Pub Date : 2022-09-21 DOI: 10.1134/S1811238222700187

A. N. Blokhin, M. M. Dudkina, A. V. Tenkovtsev

引用次数: 0

Amino- and Sulfo-Containing Molecular Brushes Based on Oligo(ethylene glycol) (Meth)Acrylates: Synthesis and Properties in Solutions 基于低聚乙二醇(甲基)丙烯酸酯的含氨基和含亚砜分子刷:合成及其在溶液中的性能

IF 2.2 4区化学

Polymer Science, Series C Pub Date : 2022-09-13 DOI: 10.1134/S1811238222700175

A. S. Simagin, M. V. Savinova, D. M. Kamorin, O. A. Kazantsev, D. V. Orekhov, M. A. Simonova, S. V. Orekhov

{"title":"Amino- and Sulfo-Containing Molecular Brushes Based on Oligo(ethylene glycol) (Meth)Acrylates: Synthesis and Properties in Solutions","authors":"A. S. Simagin, M. V. Savinova, D. M. Kamorin, O. A. Kazantsev, D. V. Orekhov, M. A. Simonova, S. V. Orekhov","doi":"10.1134/S1811238222700175","DOIUrl":"10.1134/S1811238222700175","url":null,"abstract":"<p>Amphiphilic sulfo- or amino-containing molecular brushes are synthesized by the radical copolymerization of methacrylic esters containing oligo(ethylene glycol) and/or oligo(propylene glycol) blocks of varying length and arrangement with 2-acrylamido-2-methylpropanesulfonic acid or <i>N</i>-(3-dimethylaminopropyl)methacrylamide in solutions (water, ethyl acetate, toluene). In copolymerization with 2-acrylamido-2-methylpropanesulfonic acid in water, the compositional homogeneity of the copolymers grows appreciably with increasing concentration of initial solutions. It is shown that the structure of macromonomers has almost no effect on their reactivity ratios in copolymerization with <i>N</i>-(3-dimethylaminopropyl)methacrylamide in organic solvents. The synthesized amino-containing molecular brushes exhibit stimuli-responsive properties in aqueous solutions, and the arrangement of hydrophilic and hydrophobic blocks in the side chains of macromolecules affects dependences of the phase transition temperature on polymer concentration and рН.</p>","PeriodicalId":740,"journal":{"name":"Polymer Science, Series C","volume":"64 2","pages":"232 - 244"},"PeriodicalIF":2.2,"publicationDate":"2022-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4560866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Comb-Like Polyelectrolytes with Quinolinium and Trimethylammonium Cations in Micellar Catalysis 具有喹啉和三甲铵阳离子的梳状聚电解质在胶束催化中的应用

IF 2.2 4区化学

Polymer Science, Series C Pub Date : 2022-09-13 DOI: 10.1134/S1811238222700163

P. A. Fetin, V. I. Fetina, M. V. Kadnikov, A. A. Lezov, I. M. Zorin

{"title":"Comb-Like Polyelectrolytes with Quinolinium and Trimethylammonium Cations in Micellar Catalysis","authors":"P. A. Fetin, V. I. Fetina, M. V. Kadnikov, A. A. Lezov, I. M. Zorin","doi":"10.1134/S1811238222700163","DOIUrl":"10.1134/S1811238222700163","url":null,"abstract":"<div><div><h3>\u0000 <b>Abstract</b>—</h3><p>Homo- and copolymers of poly-11-acryloyloxyundecyltrimethylammonium bromide and poly-11-acryloyloxyundecylquinolinium bromide have been prepared. Molecular parameters and solubilization properties of these polyelectrolytes have been determined. Their catalytic activity in the model reaction of alkaline hydrolysis of <i>p-</i>nitrophenyl butyrate has been investigated. The introduction of the units containing a quinoline moiety has led to consistent growth of the solubilization capacity of the copolymer with respect to a hydrophobic dye, Orange OT. The obtained comb-like polyelectrolytes have been found prone to solubilization over the entire concentration range; they have not possessed critical micelle concentration typical for low-molecular-weight surfactants. Acceleration of the alkaline hydrolysis of the model ester by 2–3 times has been observed in the presence of even low concentration of the comb-like polyelectrolytes. The synthesized polymeric surfactants have not crystallized with the cooling of the solution, in contrast to their monomers and other cationic low-molecular-weight surfactants.</p></div></div>","PeriodicalId":740,"journal":{"name":"Polymer Science, Series C","volume":"64 2","pages":"144 - 153"},"PeriodicalIF":2.2,"publicationDate":"2022-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4851623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent Advances in the Field of Polycarboranesiloxanes Synthesis 聚碳烷硅氧烷合成研究进展

IF 2.2 4区化学

Polymer Science, Series C Pub Date : 2022-09-13 DOI: 10.1134/S1811238222700151

V. A. Vasnev, G. D. Markova

引用次数: 0

Amphiphilic Copolymers of Different Structure Based on Poly(ethylene glycol): Synthesis, Physico-Chemical Properties, and Cytotoxicity 基于聚乙二醇的不同结构两亲共聚物:合成、物理化学性质和细胞毒性

IF 2.2 4区化学

Polymer Science, Series C Pub Date : 2022-08-31 DOI: 10.1134/S1811238222700126

M. Yu. Zaremski, N. S. Melik-Nubarov, I. D. Grozdova, E. E. Aliev, S. A. Rumyantsev

引用次数: 0