SCATTERING FROM NETWORK POLYDISPERSITY IN POLYMER GELS

被引：78

作者：

GEISSLER, E ^{[1
]}

HORKAY, F ^{[1
]}

HECHT, AM ^{[1
]}

机构：

[1] EOTVOS LORAND UNIV, DEPT COLLOID SCI, H-1117 BUDAPEST, HUNGARY

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.71.645

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Swollen networks possess permanent elastic constraints that induce static variations [deltaphi2]s at a microscopic scale in the polymer volume fraction phi. It is shown that the concentration polydispersity [deltaphi2]s/phi2 is related to the macroscopic osmotic and elastic properties of the gel. An expression is derived for the dependence of [deltaphi2]s/phi2 on swelling. Good agreement is found with previously reported small-angle neutron scattering measurements in randomly cross-linked polyvinyl acetate and end-link polydimethyl siloxane networks swollen in toluene.

引用

页码：645 / 648

页数：4

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