Diblock copolymers of ethylene oxide and 1,2-butylene oxide in aqueous solution Formation of unimolecular micelles

被引：13
|
作者：
Ribeiro, Maria Elenir N. P. [1 ]
de Oliveira, Samira A. [1 ]
Ricardo, Nagila M. P. S. [1 ]
Mai, Shao-Min [2 ]
Attwood, David [4 ]
Yeates, Stephen G. [3 ]
Booth, Colin [3 ]
机构：
[1] Univ Fed Ceara, Polymer Lab, Dept Organ & Inorgan Chem, BR-60455760 Fortaleza, Ceara, Brazil
[2] Univ Sheffield, Dept Chem, Sheffield S3 7HF, S Yorkshire, England
[3] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England
[4] Sch Pharm, Manchester M13 9PL, Lancs, England
来源：
INTERNATIONAL JOURNAL OF PHARMACEUTICS | 2008年 / 362卷 / 1-2期
关键词：
Block copolymers; Critical micelle concentration; Unimolecular micelles;
D O I：
10.1016/j.ijpharm.2008.06.001
中图分类号：
R9 [药学];
学科分类号：
1007 ;
摘要：
The dependence of log(cmc) on hydrophobic block length n was examined for EmBn copolymers (E = oxyethylene, B = oxybutylene, subscripts denote number-average block lengths in repeat units)with n in the range 30-76. Combination with published data for EmBn diblock copolymers with shorter E-blocks shows two changes of slope in the log(cmc)-n plot corresponding to the onset of unimolecular micelle formation at n approximate to 12 and completion of this process at n approximate to 30. The results are discussed with reference to published data for EmLn and EmCLn (L from D,L-lactide; CL from epsilon-caprolactone) copolymers, which show similar behaviour. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：193 / 196
页数：4
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