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Interaction of cation‐exchange membrane with polycation. II. Poly( N ‐alkyl‐4‐vinylpyridinium halides)
Author(s) -
Ohmura Nobuhiko,
Kagiyama Yasuhiro,
Mizutani Yukio
Publication year - 1989
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1989.070380604
Subject(s) - chemistry , pyridinium , alkyl , halide , ion exchange , inorganic chemistry , membrane , polymer chemistry , medicinal chemistry , ion , organic chemistry , biochemistry
The effect of the hydrophile–lipophile balance (HLB) of poly( N ‐alkyl‐4‐vinylpyridinium halides) (PAVP) on the interaction between PAVP and the cation‐exchange membrane was elucidated by using various alkyl groups: methyl, ethyl, octyl, and so on. In the electrodialytic concentration of sea water by using the membrane on which PAVP has been adsorbed or ion‐exchanged, the ratio of monovalent cations to total cations in the concentrated brine, β (Na+K), is almost same at the initial stage in species of PAVP. However, the deterioration ratio of β(Na+K) is smaller with decreasing HLB. In order to obtain the large value of β(Na+K), poly( N ‐methyl and dodecyl‐4‐vinylpyridinium chloride) (PMDVP), was investigated. PMDVP, of which the ratio of pyridinium groups quaternized with 1‐bromododecane to total pyridinium groups (Qd) is about 40%, shows high initial value of β(Na+K) and its good durability.