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Poly(butylene terephthalate)–polyarylate blends
Author(s) -
Runt J.,
Miley D. M.,
Gallagher K. P.,
Zhang X.,
Barron C. A.,
Kumar S. K.
Publication year - 1994
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1994.220050606
Subject(s) - materials science , transesterification , polymer blend , poly ethylene , amorphous solid , polymer , crystallization , miscibility , melting point depression , melting point , ethylene , phase (matter) , composite material , polymer chemistry , polymer science , chemical engineering , copolymer , organic chemistry , catalysis , chemistry , engineering
In this paper we focus on miscible blends of two engineering polymers: poly(butylene terephthalate) (PBT) and a polyarylate (PAr). The issue of transesterification in these blends will be addressed, followed by a discussion of the crystallization kinetics of PBT, poly(ethylene terephthalate) and several PBT/PAr blends. The ability to estimate polymer–polymer interaction parameters in blends from melting point depression will also be discussed. The amorphous phase behavior of the PBT/PAr blends has been explored primarily using dielectric spectroscopy. For blends in which PBT has crystallized, we observe two relaxations associated with T g ‐like motion, and this behavior is interpreted in light of our recent work on order–disorder interphases in crystalline blends.