摘要
采用统计力学方法，将长链ＰＤＭＳ分子作为一个约束在圆柱体内的小体系进行了处理，利用计算机进行模拟ＰＤＭＳ链的动态过程和处理矩阵连乘、坐标转换，得出受约有限长度高分子链的配分函数表达式及熵的表达式。这为进一步研究多链体系的热力学性质提供一种方法。
The partition function Z of short PDMS chains confined in an infinite cylinder is employing the rotational isomeric state model and using computer to calculate matrix serial products and coordinate transform, and given by ln Z=(a 0+a 1D+a 2D 2+a 3D 3)N+(b 0+b 1D+b 2D 2+b 3D 3)Here, N is the chain length of a chain; D is the diameter of an infinite cylinder; parameters a (a 0,a 1,a 2,a 3) and b (b 0,b 1,b 2,b 3) depend only on temperature T and their relegation is square one. The results of the short polymer chains confined in a cylinder can provide some thermodynamical properties of dense polymer chains.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1999年第6期32-34,共3页
Polymer Materials Science & Engineering
基金
国家自然科学基金
关键词
模型
PDMS链
热力学函数
高分子
链结构
rotational isomeric state model, PDMS chain, therodynamical properties
