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Phase distribution of polymers in immiscible polymer alloy without compatibilizer
Author(s) -
Hachiya Hiroshi,
Takayama Shigeki,
Takeda Kunihiko
Publication year - 1998
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19981219)70:12<2521::aid-app26>3.0.co;2-s
Subject(s) - materials science , alloy , composite material , polystyrene , phase (matter) , polymer , copolymer , flexural modulus , flexural strength , chemistry , organic chemistry
The phase separation of PS/SAN/PPE (polystyrene/acrylonitrile‐styrene copolymer/polyphenylene ether) immiscible alloy and the distribution of PPE into the separated phases in the alloy have been studied in detail. The profiles of the loss modulus clearly showed the phase separation, and the structure of the alloy could be designed by the assistance of the viscoelastic information. The immiscible alloy composed of PS, SAN, and PPE showed high distortion temperature, good fluidity, and high flexural strength even in the absence of the compatibilizer. PPE distributed into the two phases and played a role of a compatibilizer. The PS/PPE phase led to the high distortion temperature and the SAN/PPE phase brought about the high mechanical strength. The distribution constant of PPE in PS and SAN phases was measured and showed a constant value ( K = 0.50) in the whole region of the alloy composition. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 70: 2521–2526, 1998