Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Cobalt-mediated Radical Polymerization of Vinyl Acetate and Acrylonitrile with Poly(N-vinyl pyrrolidone) Macroinitiator End-capped by Cobalt(II) Acetylacetonate

Poly(N-vinyl pyrrolidone)-$Co(acac)_2$를 고분자 개시제로 이용한 비닐아세테이트와 아크릴로니트릴의 중합

  • Jeon, Hyun-Jeong (Department of Advanced Fiber Engineering, Division of Nano-Systems, Inha University) ;
  • Youk, Ji-Ho (Department of Advanced Fiber Engineering, Division of Nano-Systems, Inha University)
  • 전현정 (인하대학교 나노시스템학부) ;
  • 육지호 (인하대학교 나노시스템학부)
  • Received : 2010.09.24
  • Accepted : 2010.11.20
  • Published : 2010.12.31
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Abstract

Cobalt-mediated radical polymerization (CMRP) of vinyl acetate (VAc) and acrylonitrile (AN) with poly(N-vinyl pyrrolidone) macroinitiator end-capped by cobalt(II) acetylacetonate [PVP-$Co(acac)_2$] was conducted, and the effects of the polymerization temperature and the presence of electron-donating compounds on the block copolymer synthesis were investigated. PVP-$Co(acac)_2$ is sensitive to oxygen and should be stored in an inert atmosphere. The CMRP of VAc with the PVP-$Co(acac)_2$ macroinitiator did not proceed in a controlled manner probably due to the inefficient deactivation reaction between the growing PVP-b-PVAc radicals and $Co(acac)_2$. However, well-defined PVP-b-PAN could be synthesized in dimethyl sulfoxide at $15^{\circ}C$. The well-controlled process was evidenced by the linear relationship between ln($[M]_0$/[M]) vs. time.

Keywords

Acknowledgement

Supported by : Inha University

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