Systematic interpretation of the anion-exchange behaviour of polyphosphate oligomers

被引：3
|
作者：
Kura, G [1 ]
Miyazaki, Y
Waki, H
Marton, A
机构：
[1] Fukuoka Univ Educ, Dept Chem, Fukuoka 8114192, Japan
[2] Hungarian Acad Sci, Air Chem Res Grp, H-8201 Veszprem, Hungary
来源：
REACTIVE & FUNCTIONAL POLYMERS | 1998年 / 38卷 / 2-3期
关键词：
anion-exchange selectivity; selectivity coefficient; cyclopolyphosphate; linear polyphosphate; P-31; NMR;
D O I：
10.1016/S1381-5148(98)00036-4
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Anion-exchange distribution ratio of some linear and cyclo-polyphosphate oligomers were measured in tetramethylammonium chloride solution using Dowex 1-X4 anion-exchange resin. The selectivity coefficient K-Cl(p), of the exchange reaction was evaluated from the log D vs, log([Cl-]/<([Cl-])over bar>) plot for each polyphosphate anion. The dependence of selectivity coefficient on the charge of the anion is interpreted in terms of the structure of the phosphate species. Differences in selectivity coefficients between the linear and cyclo-polyphosphate series are also discussed. (C) 1998 Elsevier Science B.V. All rights reserved.
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页码：197 / 203
页数：7
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