SCATTERED INTENSITY BY A CROSS-LINKED POLYMER BLEND

被引：20

作者：

BETTACHY, A

DEROUICHE, A

BENHAMOU, M

BENMOUNA, M

VILGIS, TA

DAOUD, M

机构：

[1] UNIV CASABLANCA,PHYS LIQUIDES & POLYMERES LAB,CASABLANCA,MOROCCO

[2] MAX PLANCK INST POLYMER RES,D-55021 MAINZ,GERMANY

[3] CENS,CEA,LAB LEON BRILLOUIN,CNRS,F-91191 GIF SUR YVETTE,FRANCE

来源：

MACROMOLECULAR THEORY AND SIMULATIONS | 1995年 / 4卷 / 01期

关键词：

D O I：

10.1002/mats.1995.040040104

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Cross-linked mixtures of polystyrene and poly(vinyl methyl ether) exhibit a non-vanishing zero-angle intensity in small-angle neutron scattering experiments. a possible explanation is that fluctuations in composition in the mixture may be frozen by the presence of cross-links. Assuming this, we introduce a screening length kappa by the condition that the scattered intensity should not be changed by cross-linking. We find kappa(2) similar to C/((chi-chi i)), where C is an elastic constant, (chi) and (chi i), respectively, the inverse temperature and that where cross-linking is performed. When the temperature is varied, we find three regimes. In the first one, the scattered intensity is monotonously decreasing. In the second one, it has a finite maximum. In the last one, the maximum eventually diverges.

引用

页码：67 / 76

页数：10