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

页码：193 / 196

页数：4

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