Diffusion-controlled reactions at polymer-polymer interfaces

被引：95

作者：

Fredrickson, GH ^{[1
]}

机构：

[1] UNIV CALIF SANTA BARBARA, DEPT MAT, SANTA BARBARA, CA 93106 USA

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.76.3440

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A theory is presented for the diffusion-controlled coupling of end-functionalized A and B homopolymers at an A-B interface. The effective reaction rate coefficient k(e) is shown to exhibit a surprising degree of universality associated with the small center-of-mass diffusivity of high molecular weight polymers. For polymers below the entanglement threshold (N < N-e), k(e) scales with molecular weight as k(e) similar to 1/lnN, and above the threshold, k(e) similar to 1/N lnN.

引用

页码：3440 / 3443

页数：4

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