KINETICS OF MICROPHASE SEPARATION IN CROSS-LINKED POLYMER BLENDS

被引：16
|
作者：
DEROUICHE, A
BETTACHY, A
BENHAMOU, M
DAOUD, M
机构：
[1] CENS,CEA,LAB LEON BRILLOUIN,CNRS,F-91191 GIF SUR YVETTE,FRANCE
[2] FAC SCI CASABLANCA 2,PHYS POLYMERES & LIQUIDES LAB,CASABLANCA,MOROCCO
来源：
MACROMOLECULES | 1992年 / 25卷 / 26期
关键词：
D O I：
10.1021/ma00052a018
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
We study the early kinetics of the microphase separation that occurs in cross-linked polymer blends. For strong gels, when the distance between cross-links is small, this is dominated by the Rouse modes. We find a characteristic growth rate OMEGA(q) dependence on temperature and wavenumber q for the unstable modes OMEGA(q) approximately q4(chi(s) - chi), where the Flory monomer-monomer interaction parameter chi is inversely proportional to temperature and chi(s) its value at spinodal. We discuss briefly the cross-over to the kinetics of phase separating blends as cross-linking density is decreased.
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页码：7188 / 7191
页数：4
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