Counterion effect on the phase behavior of perfluoropolyether carboxylates: micelles and liquid crystals in water

被引:29
作者
Caboi, F
Chittofrati, A
Lazzari, P
Monduzzi, M
机构
[1] Univ Cagliari, Dipartimento Sci Chim, Cittadella Univ Monserrato, I-09042 Monserrato, Italy
[2] Ausimont CRS, Milan, Italy
关键词
PFPE surfactants; self-assembly; counterion effect; NMR; surface tension; conductivity;
D O I
10.1016/S0927-7757(99)00260-5
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Perfluoropolyether carboxylates having sodium, potassium or ammonium counterions, and hydrophobic chains, mostly Cl-C3F6O- terminated, have been investigated in aqueous binary systems, with the focus laid upon the counterion effect on the major self-assembly features. Micellization and liquid crystal formation have been detected via surface tension, conductivity, optical microscopy and NMR. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
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页码:47 / 56
页数:10
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