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Preparation of Poly(vinyl chloride)/Polystyrene Miscible Blends Using Supercritical CO 2 as a Swelling Agent
Author(s) -
Dai Xinhua,
Liu Zhimin,
Han Buxing,
Yang Guangying,
Zhang Xiaoli,
He Jun,
Xu Jian,
Yao Minglong
Publication year - 2002
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20020701)23:10/11<626::aid-marc626>3.0.co;2-q
Subject(s) - polystyrene , differential scanning calorimetry , materials science , swelling , vinyl chloride , styrene , glass transition , supercritical fluid , polymer chemistry , polymer , composite material , polymer blend , chemical engineering , copolymer , organic chemistry , chemistry , physics , engineering , thermodynamics
Poly(vinyl chloride)/polystyrene (PVC/PS) blends were prepared by using supercritical CO 2 as a swelling agent, and by thermally polymerizing styrene within the PVC matrix. It could be demonstrated by means of scanning electronic microscopy that PS was dispersed uniformly in the PVC matrix with very fine phase size. According to differential scanning calorimetry measurements and dynamic mechanical analysis, each blend had one single glass transition temperature, which indicated that compatible blends were obtained.