Sorption, diffusion, and swelling characteristics of sodium alginate and its blend membranes with poly(vinyl alcohol) in water-acetic acid mixtures

被引：10

作者：

Aminabhavi, TM ^{[1
]}

Shetty, LC ^{[1
]}

Naidu, BVK ^{[1
]}

Mallikarjuna, NN ^{[1
]}

Hanchinal, VM ^{[1
]}

机构：

[1] Karnatak Univ, Ctr Excellence Polymer Sci, Membrance Separat Div, Dharwad 580003, Karnataka, India

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2004年 / 94卷 / 03期

关键词：

sodium alginate; blends; swelling; transport; diffusion; sorption; acetic acid;

D O I：

10.1002/app.21022

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Sorption, diffusion, and swelling characteristics of sodium alginate and its blend membranes with poly(vinyl alcohol) were investigated for water-acetic acid mixtures by using a gravimetric method at 30, 40, and 50degreesC. The membranes were characterized by X-ray diffraction and Fourier transform infrared techniques. Concentration-independent diffusion coefficients were obtained by applying Fick's relationship before completion of equilibrium sorption. Permeation coefficients were calculated from sorption and diffusion coefficients. Concentration profiles of liquids were computed considering the sheet geometry for the membrane by solving Fick's equation under suitable boundary conditions. Arrhenius activation parameters were computed for the transport processes. Experimental results and calculated quantities were discussed to understand membrane-solvent interactions. (C) 2004 Wiley Periodicals, Inc.

引用

页码：1139 / 1150

页数：12

共 20 条

[1] MEASUREMENT OF DIFFUSIVITY OF ORGANIC LIQUIDS THROUGH POLYMER MEMBRANES - A SIMPLE AND INEXPENSIVE LABORATORY EXPERIMENT [J].