SUPERCRITICAL CARBON DIOXIDE ASSISTED SYNTHESIS OF AMPHIPHILIC GRAFT COPOLYMERS BASED ON POLY(STYRENE-CO-MALEIC ANHYDRIDE) WITH METHOXYL POLY(ETHYLENE GLYCOL) SIDE CHAINS

Jian-hua Wang; Li-ping Zhu; Zhuan Yi; Jian-hua Li; You-yi Xu; Bao-ku Zhu

doi:10.1007/s10118-012-1109-3

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SUPERCRITICAL CARBON DIOXIDE ASSISTED SYNTHESIS OF AMPHIPHILIC GRAFT COPOLYMERS BASED ON POLY(STYRENE-CO-MALEIC ANHYDRIDE) WITH METHOXYL POLY(ETHYLENE GLYCOL) SIDE CHAINS

PAPER | Updated：2023-01-03

- SUPERCRITICAL CARBON DIOXIDE ASSISTED SYNTHESIS OF AMPHIPHILIC GRAFT COPOLYMERS BASED ON POLY(STYRENE-CO-MALEIC ANHYDRIDE) WITH METHOXYL POLY(ETHYLENE GLYCOL) SIDE CHAINS
- Chinese Journal of Polymer Science Vol. 30, Issue 2, Pages: 173-180(2012)
- Affiliations：
  
  MOE Key Laboratory of Macromolecule Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Author bio：
  
  **You-yi Xu (徐又一), E-mail: opl-yyxu@zju.edu.cn
- Funds：
- DOI：10.1007/s10118-012-1109-3
  CLC：
- Received：08 March 2011，
  
  Revised：2011-04-29，
  
  Accepted：03 May 2011，
  
  Published：2012-03
- Accepted：
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Jian-hua Wang, Li-ping Zhu, Zhuan Yi, et al. SUPERCRITICAL CARBON DIOXIDE ASSISTED SYNTHESIS OF AMPHIPHILIC GRAFT COPOLYMERS BASED ON POLY(STYRENE-CO-MALEIC ANHYDRIDE) WITH METHOXYL POLY(ETHYLENE GLYCOL) SIDE CHAINS[J]. Chinese Journal of Polymer Science, 2012, 30(2): 173-180.
DOI：

Jian-hua Wang, Li-ping Zhu, Zhuan Yi, et al. SUPERCRITICAL CARBON DIOXIDE ASSISTED SYNTHESIS OF AMPHIPHILIC GRAFT COPOLYMERS BASED ON POLY(STYRENE-CO-MALEIC ANHYDRIDE) WITH METHOXYL POLY(ETHYLENE GLYCOL) SIDE CHAINS[J]. Chinese Journal of Polymer Science, 2012, 30(2): 173-180. DOI： 10.1007/s10118-012-1109-3.

摘要

Abstract

Supercritical carbon dioxide (scCO

) was used as a reaction medium in synthesizing amphiphilic graft copolymers composed of poly(styrene-co-maleic anhydride) (SMA) backbones and methoxyl poly(ethylene glycol) (MPEG) side chains via esterification. The synthesized copolymers were characterized by Fourier transform infrared spectroscopy (FTIR)

gel permeation chromatography (GPC)

H-NMR

thermo-gravimetric analysis (TGA) and differential scanning calorimetric analysis (DSC). The gelation phenomenon was suppressed effectively by tuning reaction conditions. The influences of scCO

temperature and pressure on the conversion of anhydride were investigated. It was found that the highest conversion ratio occurred at 80℃ under a constant pressure of 14 MPa or 26 MPa. With the increase of scCO

pressure

the conversion ratio increased first

and then leveled off. The conversion ratio of anhydride could be controlled by regulating the reaction conditions. It was also revealed that using low molecular weight MPEG brought a high conversion ratio of anhydride.

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