MECHANICAL-PROPERTIES OF UNSATURATED POLYESTER RESINS IN RELATION TO THEIR CHEMICAL-STRUCTURE .1. SECONDARY RELAXATIONS AND LOCAL MOTIONS

被引：27
|
作者：
MELOT, D
ESCAIG, B
LEFEBVRE, JM
EUSTACHE, RP
LAUPRETRE, F
机构：
[1] UNIV SCI & TECH LILLE,CNRS,STRUCT & PROPRIETES ETAT SOLIDE LAB,F-59655 VILLENEUVE DASCQ,FRANCE
[2] ESPCI,CNRS,PHYSICOCHIM STRUCT & MACROMOLEC LAB,F-75231 PARIS 05,FRANCE
来源：
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1994年 / 32卷 / 02期
关键词：
UNSATURATED POLYESTER NETWORKS; SECONDARY RELAXATIONS; C-13 SOLID STATE NMR; DYNAMIC MECHANICAL SPECTROSCOPY;
D O I：
10.1002/polb.1994.090320206
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Dynamic mechanical spectroscopy has been combined with high-resolution solid-state C-13 NMR to characterize the molecular motions responsible for the gamma and beta secondary relaxations in unsaturated polyester networks. In DEG networks the gamma transition is assigned to restricted phenyl group rotation in the Styrene cross-links whereas the motion of molecular groups in the vicinity of the residual maleic double bonds account for the beta transition. (C) 1994 John Wiley and Sons, Inc.
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页码：249 / 260
页数：12
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