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.