THE COLLAPSE OF FREE POLYMER-CHAINS IN A NETWORK

被引：31

作者：

BRIBER, RM ^{[1
]}

LIU, XD ^{[1
]}

BAUER, BJ ^{[1
]}

机构：

[1] NIST, DIV POLYMERS, GAITHERSBURG, MD 20899 USA

来源：

SCIENCE | 1995年 / 268卷 / 5209期

关键词：

D O I：

10.1126/science.268.5209.395

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The conformation of linear polymer chains trapped in a matrix of cross-linked polymer has been measured by neutron scattering. Three regimes were found depending on the length of the linear chain, N-l, with respect to the mesh size of the network, N-c. When N-c > N-l, the radius of gyration, R(g), of the linear chain is the same as that observed in the uncross-linked melt. When N-c < N-l, R(g) shrinks according to the scaling relation R(g)(-1) similar to N-c(-1) that has been predicted for isolated polymer chains trapped in a field of random obstacles. When N-c << N-l, the linear chains are observed to segregate.

引用

页码：395 / 397

页数：3

共 28 条

[1] MOLECULAR-WEIGHT AND TEMPERATURE-DEPENDENCE OF POLYMER DIMENSIONS IN SOLUTION [J].