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Transesterification in polymer blends including polycarbonate at high temperatures
Author(s) -
Nishi Toshio,
Suzuki Takashi,
Tanaka Hajime,
Hayashi Takafumi
Publication year - 1991
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19910510105
Subject(s) - miscibility , polycarbonate , transesterification , differential scanning calorimetry , materials science , spinodal decomposition , phase (matter) , chemical engineering , polymer chemistry , polymer blend , polymer , analytical chemistry (journal) , chemistry , copolymer , composite material , chromatography , organic chemistry , thermodynamics , methanol , physics , engineering
Miscibility of polycarbonate (PC)/poly (arylate) (PAr) was studied by differential scanning calorimetry (DSC), phase contrast microscopy with digital image analysis (DIA) system, FT‐IR spectroscopy, and cloud points for the PC/PAr/methylene chloride ternary systems. PC and PAr were immiscible over the whole composition range from the thermodynamical viewpoint. However, PC/PAr is homogenized by transesterification between PC and PAr at high temperatures. There is observed a competition between phase separation due to thermodynamical factor and phase dissolution due to transesterification. The pattern of the phase separation was spinodal decomposition type and the structure was successfully analysed by DIA.