Preparation and characterization of large ether-ester rings

Cyclic oligomers of tetraethyleneglycol succinate [O(CH 2CH 2O) 4.CO.(CH 2) 2.CO] x were prepared by a ring-chain reaction. The cyclic products were characterized in full. Cyclic oligomers with up to eight repeat units were fractionated using preparative gel permeation chromatography to give narrow...

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Bibliographic Details
Published in:Polymer (Guilford) 1997-04, Vol.38 (9), p.2287-2290
Main Authors: Wood, B.R., Semlyen, J.A., Hodge, P.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
gel permeation chromatography
large cyclic ether-esters
Organic polymers
Physicochemistry of polymers
Polycondensation
Preparation, kinetics, thermodynamics, mechanism and catalysts
X-ray crystal structure
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Summary:Cyclic oligomers of tetraethyleneglycol succinate [O(CH 2CH 2O) 4.CO.(CH 2) 2.CO] x were prepared by a ring-chain reaction. The cyclic products were characterized in full. Cyclic oligomers with up to eight repeat units were fractionated using preparative gel permeation chromatography to give narrow molar mass fractions with polydispersities of 1.03. The fraction consisting of the monomeric ring only was found to crystallize readily, enabling its X-ray crystal structure to be determined.
ISSN:0032-3861
1873-2291
DOI:10.1016/S0032-3861(96)00973-1