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Conformational Behavior of Polymer Chains of Different Architectures in Strongly Endothermic Solvent Mixtures: Specific Solvation Effects.
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SYSNO ASEP 0484240 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Conformational Behavior of Polymer Chains of Different Architectures in Strongly Endothermic Solvent Mixtures: Specific Solvation Effects. Author(s) Suchá, L. (CZ)
Limpouchová, Z. (CZ)
Procházka, Karel (UCHP-M)Source Title Colloid and Polymer Science - ISSN 0303-402X
Roč. 295, č. 8 (2017), s. 1391-1403Number of pages 13 s. Language eng - English Country US - United States Keywords cononsolvency ; preferential solvation ; star polymer Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry R&D Projects GA15-19542S GA ČR - Czech Science Foundation (CSF) Institutional support UCHP-M - RVO:67985858 UT WOS 000406174700014 EID SCOPUS 85018467216 DOI 10.1007/s00396-017-4083-z Annotation Preferential solvation of polymer chains by the thermodynamically better component in mixed solvent is a general phenomenon which has been amply studied in systems of miscible solvent components. In strongly endothermic mixtures of partially miscible solvent components, it provokes transient contraction of polymer chains and can lead to cononsolvency, which consists in the fact that a mixture of two good solvents becomes a poor solvent. It has been studied for a few polymers and solvent mixtures, but so far, there is not a consensus concerning the principles of this behavior at the molecular level. We performed a series of coarse-grained dissipative particle dynamic simulations aimed at broadening the knowledge of preferential solvation in endothermic mixtures. The study shows that the cononsolvency can be partially explained by general thermodynamic arguments at coarse-grained the mean-field level, but the model ignoring specific interactions fails to describe all details correctly. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2018
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