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Phase structure evolution during compression molding of compatibilized polymer blends
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SYSNO ASEP 0379755 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Phase structure evolution during compression molding of compatibilized polymer blends Author(s) Fortelný, Ivan (UMCH-V) RID
Dimzoski, Bojan (UMCH-V)
Michálková, Danuše (UMCH-V)Source Title Journal of Macromolecular Science - Physics - ISSN 0022-2348
Roč. 51, č. 10 (2012), s. 2026-2033Number of pages 8 s. Language eng - English Country US - United States Keywords coalescence ; compatibilization ; compression molding Subject RIV BJ - Thermodynamics R&D Projects IAA200500903 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40500505 - UMCH-V (2005-2011) UT WOS 000308022800010 DOI 10.1080/00222348.2012.661668 Annotation The phase structures of quenched, annealed, and compression-molded samples of polypropylene/polystyrene/styrene–butadiene block copolymer (PP/PS/SB) blends were compared with the aim to elucidate the phase structure evolution during individual steps of compression molding. It was found that PS particles partitioned with SB are formed by coalescence in a hot press. Measurement of the temperature during cooling of compression-molded samples showed that a decrease of the temperature in molten PP to its crystallization temperature is fast, and coalescence during this step is small. Coalescence induced by rejection of dispersed particles from the crystallizing front of PP matrix gives a remarkable contribution to the size of PS particles in compression-molded samples. This should be considered, besides coalescence in a hot press, for description of the phase structure evolution during compression molding for all blends with a semicrystalline matrix. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2013
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