LARGE-SCALE MICROSEGREGATION IN POLYACRYLAMIDE GELS (SPINODAL GELS)

被引：43

作者：

ASNAGHI, D ^{[1
]}

GIGLIO, M ^{[1
]}

BOSSI, A ^{[1
]}

RIGHETTI, PG ^{[1
]}

机构：

[1] UNIV CALABRIA,DEPT CELL BIOL,ARCAVACATA,ITALY

来源：

JOURNAL OF CHEMICAL PHYSICS | 1995年 / 102卷 / 24期

关键词：

D O I：

10.1063/1.468792

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Exceptionally large pore sizes have recently been reported for polyacrylamide gels grown in the presence of polyethylene glycol. We present small angle static light scattering measurements performed during the evolution of this peculiar gelation process. We give evidence that the large pores are generated by a microsegregation process caused by the competition between gelation and a phase separation of the polymers solution. The separation occurs via spinodal decomposition, and the size of the pores is determined by the stage at which the decomposition is stopped by the gelation process. © 1995 American Institute of Physics.

引用

页码：9736 / 9742

页数：7

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