SPACE AVAILABLE TO SMALL DIFFUSANTS IN POLYMERIC GLASSES - ANALYSIS OF UNOCCUPIED SPACE AND ITS CONNECTIVITY

被引:78
作者
ARIZZI, S
MOTT, PH
SUTER, UW
机构
[1] MIT,DEPT MAT SCI & ENGN,CAMBRIDGE,MA 02139
[2] MIT,INST POLYMER,CAMBRIDGE,MA 02139
关键词
GLASSY POLYMERS; UNOCCUPIED SPACE AND ITS CONNECTIVITY IN; DIFFUSANT IN POLYMERIC GLASS; MODEL FOR SPACE AVAILABLE TO; POLYPROPYLENE; SMALL DIFFUSANTS AND UNOCCUPIED SPACE IN; BISPHENOL-A-POLYCARBONATE SMALL DIFFUSANTS AND UNOCCUPIED SPACE IN;
D O I
10.1002/polb.1992.090300501
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Given a diffusant, modeled as a hard sphere, and a microstructure representative of a glassy polymer, represented as a rigid matrix of hard sphere atoms, a quantitative determination of the unoccupied space in the polymer was achieved by applying a Delaunay tessellation of space to available glassy microstructures of atactic polypropylene and bisphenol-A-polycarbonate. A description is also given of how local portions of unoccupied space are distributed and interconnected across a polymeric matrix. The shape and dimensions of clustered portions of unoccupied space were analyzed. A visualization of these clusters indicated significant differences, depending on the nature of the diffusant.
引用
收藏
页码:415 / 426
页数:12
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