Pervaporation of ionically surface crosslinked chitosan composite membranes for water-alcohol mixtures

被引:90
作者
Lee, YM
Nam, SY
Woo, DJ
机构
[1] Department of Industrial Chemistry, College of Engineering, Hanyang University
[2] Yukong Taeduk Inst. of Technology, Taejon, 140-1 Wonchon-dong, Yusung-ku
关键词
pervaporation; water-alcohol mixtures; chitosan; composite membranes; surface crosslinking;
D O I
10.1016/S0376-7388(97)00089-6
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Chitosan composite membranes were prepared by casting solution onto a porous polyethersulfone ultrafiltration membrane with various surface crosslinking densities. Pervaporation performance of water-alcohol mixtures through the surface crosslinked chitosan composite membranes exhibited a high selectivity value with a low permeation flux. By increasing feed ethanol concentration, permeate flux decreased and water concentration in the permeate decreased drastically at a feed ethanol concentration above 97 wt%. Permeation rate of chitosan composite membranes :is less temperature-dependent than that of PVA. IPA-water mixture has a similar tendency as that of ethanol-water mixture in pervaporative dehydration performances.
引用
收藏
页码:103 / 110
页数:8
相关论文
共 28 条
[1]  
BAEK JW, 1990, POLYMER, V14, P273
[2]  
BRANDRUP J, 1989, POLYM HDB, V6, P221
[3]  
CHAVASIT V, 1988, POLYM BULL, V19, P223
[4]   INFLUENCE OF COMPOSITE MEMBRANE-STRUCTURE ON PERVAPORATION [J].
GUDERNATSCH, W ;
MENZEL, T ;
STRATHMANN, H .
JOURNAL OF MEMBRANE SCIENCE, 1991, 61 :19-30
[5]   RESISTANCE MODEL APPROACH TO ASYMMETRIC POLYETHERIMIDE MEMBRANES FOR PERVAPORATION OF ISOPROPANOL/WATER MIXTURES [J].
HUANG, RYM ;
FENG, XS .
JOURNAL OF MEMBRANE SCIENCE, 1993, 84 (1-2) :15-27
[6]  
HUANG RYM, 1991, SEPARATION CHARACTER, pCH2
[7]   FORMATION OF POLYELECTROLYTE COMPLEXES BETWEEN CELLULOSE DERIVATIVES AND THEIR BLOOD COMPATIBILITY [J].
ITO, H ;
SHIBATA, T ;
MIYAMOTO, T ;
NOISHIKI, Y ;
INAGAKI, H .
JOURNAL OF APPLIED POLYMER SCIENCE, 1986, 31 (08) :2491-2500
[8]  
KAKIZAKI M, 1988, P 4 INT C CHIT CHIT, P511
[9]  
KIFUNE K, 1991, P 5 INT C CHIT CHIT, P9
[10]   SYNTHESIS AND PROPERTIES OF DIETHYLAMINOETHYL CHITOSAN [J].
KIM, JH ;
LEE, YM .
POLYMER, 1993, 34 (09) :1952-1957