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Fractional complexation in a miscible polymer blend. Calorimetry and size exclusion chromatography
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SYSNO ASEP 0429259 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Fractional complexation in a miscible polymer blend. Calorimetry and size exclusion chromatography Author(s) Kratochvíl, Jaroslav (UMCH-V) RID
Šturcová, Adriana (UMCH-V) RID
Sikora, Antonín (UMCH-V) RID
Dybal, Jiří (UMCH-V) RID, ORCIDSource Title Polymer International. - : Wiley - ISSN 0959-8103
Roč. 63, č. 8 (2014), s. 1406-1413Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords miscible blend ; interpolymer complex ; residual phase Subject RIV CD - Macromolecular Chemistry R&D Projects IAA200500903 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GAP108/12/0703 GA ČR - Czech Science Foundation (CSF) Institutional support UMCH-V - RVO:61389013 UT WOS 000338994700010 EID SCOPUS 84903579757 DOI 10.1002/pi.4729 Annotation Poly(N-methyldodecano-12-lactam) (PMDL) is miscible with poly(4-vinylphenol) (PVPh). In the system PMDL + PVPh + tetrahydrofuran containing low-molar-mass polymer pair, this miscible blend is soluble in the solvent. In this work, it has been found that the system containing high-molar-mass polymer pair undergoes associative phase separation into a gel-like interpolymer complex and a soluble residual phase (RP). The complex and RP samples were characterized using differential scanning calorimetry, size exclusion chromatography and thermogravimetric analysis. The average molar ratio of PMDL to PVPh in the complex is 1:2, considered an optimum composition of the interpolymer complex. The complex shows higher glass transition temperature and higher thermal stability than the RP. Formation of the interpolymer complex in the studied system and differences in its properties from the RP are caused by higher molar mass/length of associated polymer chains as a result of fractionation during which the high-molar-mass fraction forms the gel-like interpolymer complex and the low-molar-mass fraction forms the soluble RP. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2015
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