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Controlled synthesis of block polyesters by reactive extrusion
Author(s) -
Moad Graeme,
Groth Andrew,
O'Shea Michael S.,
Rosalie Julian,
Tozer Ramon D.,
Peeters Gary
Publication year - 2003
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200351204
Subject(s) - transesterification , reactive extrusion , materials science , polyester , ethylene , polymer chemistry , catalysis , extrusion , organic chemistry , chemical engineering , chemistry , composite material , engineering
The synthesis of block copolyesters by combining transesterification resistant oligoesters with poly(ethylene terephthalate) is described. Critical factors in the synthesis include processing conditions (temperature), end groups and catalysts used in oligoester synthesis. It is necessary to achieve a balance between ease of incorporation/synthesis and transesterification resistance. The process is discussed with reference to poly(neopentyl isophthalate) as a representative transesterification resistant oligoester. The primary motivation for the work has been the development of higher barrier poly(ethylene terephthalate) useful for making monolayer beverage containers.