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Synthesis and Characterization of Block Copolymers of Poly(Butylenes Terephthalate‐Co‐Adipate)
Author(s) -
Tsai HongBing,
Li HsiaoChian,
Yu FuHsi
Publication year - 1992
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.199200041
Subject(s) - adipate , copolymer , chemistry , transesterification , polymer chemistry , dimethyl terephthalate , organic chemistry , polyester , polymer , catalysis
The block copolyesters of poly(butylene terephthalate)(PBT) and poly(butylene adipate)(PBA) were prepared by a novel two‐stage method. In the first stage, high molecular weight PBT and PBA were melt mixed in the presence of 1,4‐butanediol at 275 °C. In the second stage, vacuum was applied to raise the molecular weight. The extent of transesterification was controlled by the proportion of 1,4‐butanediol. The sequence distribution and the thermal properties of the block copolyesters were characterized by NMR and DSC respectively.