Diffusion coefficients and structure properties in the pluronic F127/n-C4H9OH/H2O system

被引:20
作者
Ding, YH
Wang, Y
Guo, R [1 ]
机构
[1] Yangzhou Univ, Dept Chem, Yangzhou 225002, Peoples R China
[2] Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225002, Peoples R China
关键词
pluronic F127; n-butanol; micelles; cyclic voltammetry; diffusion coefficient;
D O I
10.1081/DIS-120023812
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
Diffusion coefficients of different aggregates in aqueous solutions formed by an amphiphilic block copolymer, Pluronic F127 (17127), were determined by cyclic voltammetry, and the critical micelle concentration (CMC, 4.31 x 10(-4) mol L-1) of F 127 was obtained. The added n-butanol facilitates the formation of micelles from the monomers of F127 and makes the critical micelle temperature (CMT) of F127 solutions decrease. The diffusion coefficient of the F127 micelles decreases relatively fast at first with increasing n-butanol and then the decreasing trend slows after the solubilization of n-butanol in micelles reaches maximum.
引用
收藏
页码:673 / 681
页数:9
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