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The transesterification of bisphenol‐a polycarbonate (PC) and polybutylene terephthalate (PBTP): A new route to block copolycondensates
Author(s) -
Devaux J.,
Godard P.,
Mercier J. P.
Publication year - 1982
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760220403
Subject(s) - polybutylene terephthalate , transesterification , materials science , bisphenol a , polycarbonate , bisphenol , titanium , catalysis , polyethylene terephthalate , chemical engineering , organic chemistry , polymer chemistry , composite material , polyester , chemistry , metallurgy , epoxy , engineering
Abstract In this work, the exchange reaction taking place in molten blends of bisphenol‐A polycarbonate and polybutylene terephthalate was studied. A direct transesterification mechanism catalyzed by titanium residues, present in commercial PBTP, was deduced. The transesterification reaction can be ‐stopped at various levels by additives capable of complexing the titanium catalyst. This work enhances the possibility of a new approach in macromolecular engineering by directly combining polycondensates in a processing machine such as an extruder.