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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 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Conformational Behavior of Polymer Chains of Different Architectures in Strongly Endothermic Solvent Mixtures: Specific Solvation Effects. Tvůrce(i) Suchá, L. (CZ)
Limpouchová, Z. (CZ)
Procházka, Karel (UCHP-M)Zdroj.dok. Colloid and Polymer Science - ISSN 0303-402X
Roč. 295, č. 8 (2017), s. 1391-1403Poč.str. 13 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova cononsolvency ; preferential solvation ; star polymer Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP GA15-19542S GA ČR - Grantová agentura ČR Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000406174700014 EID SCOPUS 85018467216 DOI 10.1007/s00396-017-4083-z Anotace 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. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2018
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