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Bisphenol-A polycarbonate–poly(butylene terephthalate) transesterification. III. Study of model reactions

✍ Scribed by Devaux, J. ;Godard, P. ;Mercier, J. P.

Book ID
105334220
Publisher
Wiley (John Wiley & Sons)
Year
1982
Tongue
English
Weight
296 KB
Volume
20
Category
Article
ISSN
0098-1273

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✦ Synopsis

Abstract

Exchange reactions in molten bisphenol‐A polycarbonate–poly(butylene terephthalate) mixtures are investigated by means of model reactions. Transesterification can result either from direct ester‐ester interchange or via alcoholysis or acidolysis. Among the various reactions investigated, only the PBTP alcoholysis by phenol is not found to occur. Taking into account that bisphenol‐A terephthalate units (A~2~B~1~) and butylene carbonate units (A~1~B~2~) are formed in equimolecular amounts, it is concluded that direct ester‐ester interchange is the most likely mechanism for PC‐PBTP transesterification.

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## Abstract The transesterification behavior of a poly(butylene terephthalate) (PBT)/polycarbonate (PC) blend with the addition of di‐__n__‐dodecyl phosphate was studied with differential scanning calorimetry (DSC) and infrared spectroscopy. The effects of triphenyl phosphate (TPP) and di‐__n__‐dod