Title of article
Vesicle formation of polystyrene-block-poly (ethylene oxide) block copolymers induced by supercritical CO2 treatment
Author/Authors
Xu، نويسنده , , Limei and Zhang، نويسنده , , Xiaokai and Yang، نويسنده , , Hui and Li، نويسنده , , Xue and Li، نويسنده , , Chunsheng and Zhang، نويسنده , , Shuxiang، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2010
Pages
6
From page
3808
To page
3813
Abstract
A novel route for a preparation of polystyrene-block-poly(ethylene oxide) (PS-b-PEO) block copolymer vesicles induced by supercritical carbon dioxide (scCO2) is demonstrated. When PS-b-PEO block copolymer solutions in tetrahydrofuran (THF) are treated with scCO2 at 70 °C for different times, PS-b-PEO copolymers first assemble into aggregated spheres; then aggregated spheres change into large compound micelles and finally evolve into vesicles. The possible formation mechanism of the vesicles is discussed.
Keywords
Block copolymer , Vesicles , supercritical CO2
Journal title
Polymer
Serial Year
2010
Journal title
Polymer
Record number
1735281
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