ENVIRONMENT-SENSITIVE PROPERTIES OF POLYMETHACRYLIC ACID-GRAFTED POLYETHYLENE MEMBRANES

被引:27
作者
ISLAM, MA
DIMOV, A
MALINOVA, AL
机构
[1] Department of General Chemical Technology, Higher Institute of Chemical Technology
关键词
MEMBRANE PREPARATION AND STRUCTURE; MICROFILTRATION; MICROPOROUS AND POROUS MEMBRANES; THEORY; ENVIRONMENT-SENSITIVE MEMBRANE;
D O I
10.1016/0376-7388(92)80092-X
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The theories of electrolytic dissociation and complexation are applied to predict the configurations of polymethacrylic acid grafted onto polyethylene membranes. It is established that the principal factor affecting the configuration of the grafted chains are the electrostatic forces acting among the dissociated carboxyl groups. The configuration of the grafted chains depends entirely on the state of the carboxyl groups. The porosity parameter is found to vary inversely with the net charge in the chains. This parameter is determined for different water-alcohol mixtures, different pH values and three model complex-forming agents, Cu2+, Ca2+ and Cr3+. It is found that the concentration interval of the complex-forming agents at which the change in configuration takes place depends on various factors such as pH, stability constants of metal complexes with hydroxyl and carboxyl ions, as well as the valency of the complex-forming agents. The theories of electrolytic dissociation and complexation satisfactorily predict the behavior of the polymethacrylic acid-grafted membranes. The concept explains well the results obtained by some previous authors as well as ours.
引用
收藏
页码:69 / 78
页数:10
相关论文
共 12 条
[1]   INFLUENCE OF CHARACTERISTICS OF ACTIVATING POLYELECTROLYTE IN PREPARATION AND ON PROPERTIES OF INTERPOLYMER ION-EXCHANGE MEMBRANES .1. RATIONAL PRINCIPLES OF MEMBRANE PREPARATION AND THEIR EXPERIMENTAL TEST [J].
CAPLAN, SR ;
SOLLNER, K .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1974, 46 (01) :46-66
[2]   INFLUENCE OF CHARACTERISTICS OF ACTIVATING POLYELECTROLYTE IN PREPARATION AND ON PROPERTIES OF INTERPOLYMER ION-EXCHANGE MEMBRANES .3. CONSIDERATIONS CONCERNING PECULIARITIES OF FUNCTIONAL PROPERTIES OF POLYELECTROLYTE ACTIVATED INTERNAL SWELLING MEMBRANES [J].
CAPLAN, SR ;
SOLLNER, K .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1974, 46 (01) :77-84
[3]   PREPARATION CONDITIONS AFFECTING THE PERMEABILITY OF POLYETHYLENE MICROFILTRATION MEMBRANES [J].
DIMOV, A ;
ISLAM, MA .
JOURNAL OF MEMBRANE SCIENCE, 1990, 52 (01) :109-113
[4]   FILLER EFFECTS ON THE STRUCTURE AND PROPERTIES OF SEMIPERMEABLE POLYETHYLENE MEMBRANES [J].
DIMOV, A ;
ISLAM, MA .
JOURNAL OF APPLIED POLYMER SCIENCE, 1990, 41 (9-10) :2513-2516
[5]  
GENOV I, 1990, CHEM REACTION EQUILI
[6]   CONTROLLED RELEASE OF ORGANIC-SUBSTANCES USING POLYMER MEMBRANE WITH RESPONSIVE FUNCTION FOR AMINO-COMPOUNDS [J].
ISHIHARA, K ;
MURAMOTO, N ;
SHINOHARA, I .
JOURNAL OF APPLIED POLYMER SCIENCE, 1984, 29 (01) :211-217
[7]   PREPARATION AND PROPERTIES OF NOVEL ENVIRONMENT-SENSITIVE MEMBRANES PREPARED BY GRAFT-POLYMERIZATION ONTO A POROUS MEMBRANE [J].
IWATA, H ;
MATSUDA, T .
JOURNAL OF MEMBRANE SCIENCE, 1988, 38 (02) :185-199
[8]   HINDERED TRANSPORT THROUGH MICROPORES WITH ADSORBED POLYELECTROLYTES [J].
KIM, JT ;
ANDERSON, JL .
JOURNAL OF MEMBRANE SCIENCE, 1989, 47 (1-2) :163-182
[9]   GLUCOSE-SENSITIVE MEMBRANES CONTAINING GLUCOSE-OXIDASE - ACTIVITY, SWELLING, AND PERMEABILITY STUDIES [J].
KOST, J ;
HORBETT, TA ;
RATNER, BD ;
SINGH, M .
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH, 1985, 19 (09) :1117-1133
[10]  
Martell A.E., 1979, CRITICAL STABILITY C