Solute diffusion in poly(vinyl alcohol) poly(acrylic acid) interpenetrating networks

被引：128
|
作者：
Peppas, NA
Wright, SL
机构：
[1] Biomaterials and Drug Delivery Laboratories, School of Chemical Engineering, Purdue University, West Lafayette
来源：
MACROMOLECULES | 1996年 / 29卷 / 27期
关键词：
D O I：
10.1021/ma9613392
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Solute transport through interpenetrating polymeric networks of poly(vinyl alcohol) and poly(acrylic acid) at pH 3 or 6 was studied in order to investigate the influence of possible solute binding on the transport process through the networks. Diffusion of theophylline, vitamin B-12, and myoglobin was analyzed, and diffusion and partition coefficients were determined. Analysis using the free volume-based theory of Peppas and Reinhart indicated that solute binding occurred only in those hydrogels that were in the ionized state. ATR-FTIR spectroscopic studies were used to determine the level of binding in the case of myoglobin in contact with these IPN hydrogels.
引用
收藏
页码：8798 / 8804
页数：7
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