RHEOOPTICAL FOURIER-TRANSFORM INFRARED-SPECTROSCOPY OF POLYMERS .16. ORIENTATION AND STRAIN-INDUCED CONFORMATIONAL REGULARITY OF POLY(DIMETHYLSILOXANE) NETWORKS DURING CYCLIC ELONGATION AND RECOVERY

被引:8
作者
BESBES, S
BOKOBZA, L
SIESLER, HW
机构
[1] ECOLE SUPER PHYS & CHIM IND VILLE PARIS,PHYSICOCHIM STRUCT & MACROMOLEC LAB,10 RUE VANQUELIN,F-75231 PARIS 05,FRANCE
[2] UNIV ESSEN GESAMTHSCH,DEPT PHYS CHEM,W-4300 ESSEN 1,GERMANY
来源
MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA | 1993年 / 72卷
关键词
D O I
10.1002/masy.19930720114
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Two SiO2-filled poly(dimethylsiloxane) networks with different molar masses M(c) (22000 g/mol and 33000 g/mol) between the junctions have been investigated by simultaneous mechanical and Fourier-transform infrared (FTIR) spectroscopic (rheo-optical) measurements to monitor the structural changes in cyclic elongation-recovery procedures. Higher polymer chain orientation was observed at corresponding elongations for the low-M(c) network, but due to the higher extensibility appreciable strain-induced conformational regularity occurred only in the high-M(c) material. Differences with reference to unfilled model networks are pointed out.
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页码:191 / 199
页数:9
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