Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Direct Preparation of Membrane via photocationic Polymerization (I)

광양이온 중합을 통한 막의 직접 제조 (I)

  • Mah, Souk-Il (Dept. of Textile Eng., College of Eng., Inha Univ.) ;
  • Park, Woo-Yang (Dept. of Textile Eng., College of Eng., Inha Univ.) ;
  • Seon, Hyang (Dept. of Textile Eng., College of Eng., Inha Univ.) ;
  • Lee, Kang-Heup (Dept. of Chemistry, College of Science, Inha University)
  • 마석일 (인하대학교 공과대학 섬유공학과) ;
  • 박우선 (인하대학교 공과대학 섬유공학과) ;
  • 선향 (인하대학교 공과대학 섬유공학과) ;
  • 이강흡 (인하대학교 이과대학 화학과)
  • Published : 1992.04.01

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Abstract

Photopolymerization of a-methylstyrene in dichloromethane solution has been carried out in the presence of diphenyliodonium hexafluorophosphate A 500W high pressure mercury lamp was used as a light source of irradiation. The conversion of the monomer to polymer and the molecular weight distribution of the resulting polymer were measured by means of gravimetry and GPC, respectively. Higher rate of polymerization and higher average molecular weight of the polymer was observed at - 78˚C than those obtained at o˚C. Furthermore, bimodal molecular weight distribution of the polymer, obtained in the early stage of the reaction, revealed the simultaneous operation of the cationic species in the free ion and ion pair state.

Keywords

References

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