POLYSTYRENE DIFFUSION IN SEMIDILUTE SOLUTIONS AND IN SWOLLEN NETWORKS OF POLYDIMETHYLSILOXANE

被引:9
作者
AVEN, MR [1 ]
COHEN, C [1 ]
机构
[1] CORNELL UNIV,SCH CHEM ENGN,OLIN HALL,ITHACA,NY 14853
关键词
diffusion; dynamic light scattering; gels; polydimethylsiloxane; polystyrene; semidilute solutions;
D O I
10.1016/0032-3861(90)90035-W
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
We present a comparison of the diffusion coefficient of tracer polystyrene molecules in semidilute solutions and in gels of polydimethylsiloxane in tetrahydrofuran. We show that, in the regime where the size of the probe molecule is comparable to the correlation length of the host medium, the diffusion coefficient of the probe polystyrene is independent of the presence of crosslinks in the network and is well correlated with the polydimethylsiloxane concentration. © 1990.
引用
收藏
页码:778 / 780
页数:3
相关论文
共 9 条