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The Surface Properties of PAVAc Prepared by Dispersion Polymerization in ScCO2

YANG Ya-jun WANG Zi HU Chun-pu DONG Qing-zhi

东华大学学报（英文版）2008，Vol.25Issue(1)：53-57,5.

The Surface Properties of PAVAc Prepared by Dispersion Polymerization in ScCO2

YANG Ya-jun ¹WANG Zi ²HU Chun-pu ¹DONG Qing-zhi²

作者信息

1. Key Laboratory for Ultrafine Materials, Ministry of Education, Shanghai 200237. China
2. School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
折叠

摘要

Abstract

Dispersion copolymerization of acrylonitrile-vinyl acetate (AN-VAc) has been successfully performed in supercritical carbon dioxide (ScCO2) with a series of lipophilic/CO2-philic diblock copolymers, such as poly (styrener-acrylonitrile)-b-poly (1, 1, 2, 2-tetrahydroperfluorooctyl methacrylate) (PSAN-b-PFOMA), as steric stabilizers. The structure and the particle morphology of the product were characterised by FT-IR and SEM. In addition, the effects of the stabilizer on the surface properties of the products were investigated in detail. Results indicate that the surface free energy of the poly (AN-r-VAc) (PAVAc) film decreases dramatically because of the existence of the stabilizer. And, when the initial concentration of the monomer was 10% (the mass (g) of monomer to the volume (mL) of ScCO2) the optimal concentration of the stabilizer is about 5% (w/w% to monomers).

关键词

PAVAc/ dispersion polymerization/ acrylonitrile/ vinyl acetate/ surface free energy/ ScCO2

Key words

PAVAc/ dispersion polymerization/ acrylonitrile/ vinyl acetate/ surface free energy/ ScCO2

分类

化学化工

引用本文复制引用

YANG Ya-jun,WANG Zi,HU Chun-pu,DONG Qing-zhi..The Surface Properties of PAVAc Prepared by Dispersion Polymerization in ScCO2[J].东华大学学报（英文版）,2008,25(1):53-57,5.

基金项目

National Natural Science Foundation of China (No. 20674017) （No. 20674017）

东华大学学报（英文版）

ISSN：1672-5220

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