Effect of Water Content on the Size and Membrane Thickness of Polystyrene-block-Poly(ethylene oxide) Vesicles

Chun-yan Wang; Qian Yuan; Shu-guang Yang; Jian Xu

doi:10.1007/s10118-015-1618-y

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Effect of Water Content on the Size and Membrane Thickness of Polystyrene-block-Poly(ethylene oxide) Vesicles

PAPER | Updated：2021-06-21

- Effect of Water Content on the Size and Membrane Thickness of Polystyrene-block-Poly(ethylene oxide) Vesicles
- Effect of Water Content on the Size and Membrane Thickness of Polystyrene-block-Poly(ethylene oxide) Vesicles
- Chinese Journal of Polymer Science 2015年33卷第4期页码：661-668
- Affiliations：
  
  a.State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
  b.Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Author bio：
  
  **Shu-guang Yang (杨曙光), E-mail: shgyang@dhu.edu.cn
  Jian Xu (徐坚), E-mail: jxu@iccas.ac.cn
- Funds：
  
  National Natural Science Foundation of China(51103022);Science and Technology Commission of Shanghai Municipality(12PJ1400100);Innovation Program of Shanghai Municipal Education Commission, Fundamental Research Funds for the Central University and DHU Distinguished Young Professor Program and Chinese Universities Scientific Fund(CUSF-DH-D-2013004)
- DOI：10.1007/s10118-015-1618-y
  中图分类号：
- 收稿：2014-08-18，
  
  修回：2014-09-10，
  
  录用：2014-09-12，
  
  纸质出版：2015-04
- Accepted：
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Chun-yan Wang, Qian Yuan, Shu-guang Yang, 等. Effect of Water Content on the Size and Membrane Thickness of Polystyrene-block-Poly(ethylene oxide) Vesicles[J]. Chinese Journal of Polymer Science, 2015,33(4):661-668.

Chun-yan Wang, Qian Yuan, Shu-guang Yang, et al. Effect of Water Content on the Size and Membrane Thickness of Polystyrene-block-Poly(ethylene oxide) Vesicles[J]. Chinese Journal of Polymer Science, 2015, 33(4): 661-668.
Chun-yan Wang, Qian Yuan, Shu-guang Yang, 等. Effect of Water Content on the Size and Membrane Thickness of Polystyrene-block-Poly(ethylene oxide) Vesicles[J]. Chinese Journal of Polymer Science, 2015,33(4):661-668. DOI： 10.1007/s10118-015-1618-y.

Chun-yan Wang, Qian Yuan, Shu-guang Yang, et al. Effect of Water Content on the Size and Membrane Thickness of Polystyrene-block-Poly(ethylene oxide) Vesicles[J]. Chinese Journal of Polymer Science, 2015, 33(4): 661-668. DOI： 10.1007/s10118-015-1618-y.

摘要

Abstract

The asymmetric amphiphilic block copolymer polystyrene

962

-block-poly(ethylene oxide)

227

(PS

962

-PEO

227

) canforms micelles with

-dimethylformamide (DMF) as co-solvent and water as selected solvent

and when the water content of the mixed solvent is higher than 4.5 wt%

the vesicle will be dominated. This work finds that once vesicles are formed in the DMF-water mixed solvent

the vesicle size and membrane thickness can be tuned by further increasing water content. As the water fraction elevated from 4.8 wt% to 13.0 wt%

the vesicle size dercreases from 246 nm to 150 nm

while the membrane thickness increases from 28 nm to 42 nm. In addition

the block copolymer packing and the free energy are analyzed as the vesicle size becomes small and the membrane becomes thick.

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