ELECTROCHEMICAL-BEHAVIOR OF POLYELECTROLYTE COMPLEX MEMBRANES

被引:9
作者
KUDELA, V [1 ]
RICHAU, K [1 ]
SCHWARZ, HH [1 ]
PAUL, D [1 ]
机构
[1] INST POLYMER CHEM, O-1530 TELTOW, GERMANY
关键词
D O I
10.1135/cccc19922145
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Oriented concentration potentials and DC resistances of Symplex polyelectrolyte membranes made of cellulose sulfate (CS) as a polyanion and of poly(dimethyldiallylammonium chloride) (PDMDAAC) or benzyl-[2-(dodecylcarbamoyl)ethyl]dimethylammonium chloride (Quartolan) as counter-cations were measured and correlated to dialysis permeability coefficients. Concentration potentials showed that the preparation method used leads to membranes with an excess of the charge of one component. Cationic symmetrical PDMDAAC/CS membranes, anionic asymmetrical Quartolan/CS membranes and anionic asymmetrical combination of both types have the fixed ion molarity 0.05, 0.005 and 0.001 mol per litre of imbibed liquid, respectively. Specific resistances are 10(4) OMEGA cm in 0.005M- and 0.01M-KCl, 10(3) OMEGA cm in 0.05M-KCl and even higher in combined membranes. Areal resistances are low due to small membrane thickness. A linear correlation between DC conductivity and permeability has been found. Thus, also Symplex polyelectrolyte membranes can be tested by electrochemical methods.
引用
收藏
页码:2145 / 2150
页数:6
相关论文
共 6 条
  • [1] ESTIMATION OF PERMEABILITY OF CELLULOSIC MEMBRANES FROM SOLUTE DIMENSIONS AND DIFFUSIVITIES
    FARRELL, PC
    BABB, AL
    [J]. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH, 1973, 7 (04): : 275 - 300
  • [2] MEASUREMENT AND INTERPRETATION OF CONCENTRATION POTENTIALS AND AC DC RESISTANCES OF ANNEALED CELLULOSE-ACETATE MEMBRANES
    KUDELA, V
    SCHWARZ, HH
    RICHAU, K
    [J]. JOURNAL OF MEMBRANE SCIENCE, 1989, 43 (01) : 39 - 46
  • [3] PHILIPP B, 1983, CELL CHEM TECHNOL, V17, P443
  • [4] SCHWARZ HH, 1991, POLYM BULL, V25, P95
  • [5] SCHWARZ HH, 1991, 5TH P INT C PERV PRO, P79
  • [6] 1990, AUG C CHISA 90 PRAG