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Structural and thermal behavior of PC/PBT blends
Author(s) -
Mishra S. P.,
Venkidusamy P.
Publication year - 1995
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/app.1995.070581211
Subject(s) - miscibility , polycarbonate , materials science , glass transition , thermal stability , amorphous solid , intermolecular force , polymer , polymer chemistry , phase (matter) , polymer blend , composite material , molecule , crystallography , chemistry , organic chemistry , copolymer
Blends of polycarbonate (PC) with poly(butylene terphthalate) (PBT) were characterized using density measurements, DSC, IR, and TGA. Addition of PBT increases the density values of blends linearly. All the blends show a single glass transition temperature, indicating the miscibility of the two polymers in the amorphous phase. With more than 6% addition of PBT to PC, PBT crystallizes as per its own crystal structure. The addition of 4% PBT to PC improves the thermal stability at higher temperature than does pure PC. IR studies shows that addition of PBT improves the intermolecular forces in PC, in particular, on the endgroup and the CCH 3 and CO groups as indicated in the frequencies 1020, 1370, and 1770–1790 cm −1 . © 1995 John Wiley & Sons, Inc.