ORIENTATIONAL RELAXATION-TIMES OF WORM-LIKE CHAINS

被引：2

作者：

ZIABICKI, A ^{[1
]}

JARECKI, L ^{[1
]}

PERICO, A ^{[1
]}

GUENZA, M ^{[1
]}

机构：

[1] NATL RES COUNCIL,IST STUDI CHIM FIS MACROMOLEC SINTETICHE & NAT,GENOA,ITALY

来源：

MACROMOLECULAR THEORY AND SIMULATIONS | 1995年 / 4卷 / 04期

关键词：

D O I：

10.1002/mats.1995.040040404

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A semi-empirical formula for orientational relaxation times of worm-like chains in dilute solutions is proposed tau congruent to 27/8 x(3) . [1 - 3/4 x + 3/4 x exp (- 4/3x)](3) tau(rod) where tau(rod) = tau(0)N(3) is the relaxation time of a rigid rod composed of N segments, and x = 2a/L is the chain rigidity, i.e. the ratio of the double persistence length to the chain contour length, L. The formula, which can be used in the entire range of molecular rigidities and chain lengths, has been tested against segment relaxation times for semi-rigid chains calculated from the optimized Rouse-Zimm model.

引用

页码：643 / 654

页数：12

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