Copolymer and crosslinking effects in polyesters as revealed by high resolution solid state C-13 NMR and DSC | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

6632756

Reference Type

Journal Article

Title

Copolymer and crosslinking effects in polyesters as revealed by high resolution solid state C-13 NMR and DSC

Author(s)

Grobelny, J; ,

Year

1998

Is Peer Reviewed?

Yes

Journal

European Polymer Journal
ISSN: 0014-3057

Publisher

PERGAMON-ELSEVIER SCIENCE LTD

Location

OXFORD

Page Numbers

235-240

Web of Science Id

WOS:000073628900015

Abstract

The unsaturated polyesters prepared from maleic anhydride and 2,2'di(4-hydroxypro-poxyphenyl)propane and crosslinked at different temperatures with various amounts of styrene were studied by means of high resolution C-13 NMR in the solid state (CP/DD/MAS) and DSC. Experimental and theoretical values of the proton rotating frame spin-lattice relaxation time, T-1p(H), and the glass transition temperature, T-g, were determined. The copolymer and crosslinking effects described by the NMR relaxation times were found to be in agreement with those reflected by T-g. A correlation was found between the extent of these effects due to curing conditions and the mechanical properties of the styrene-crosslinked networks. (C) 1998 Elsevier Science Ltd. All rights reserved.