Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Preparation of Silicon Carbide Continuous Fiber(I) -Preparation and Thermal Degradation of Poly(dimethyl-co-methylphenylsilylene) Block Copolymer-

Silicon Carbide 섬유의 제조에 관한 기초연구(I) -Poly(dimethyl-co-methylphenylsilylene) Copolymer의 합성과 열분해-

  • Kang, D. W. (Institute of Organosilicon Research and Development, Dankook University) ;
  • Shim, Y. (Institute of Organosilicon Research and Development, Dankook University) ;
  • Yang, J. K. (Institute of Organosilicon Research and Development, Dankook University) ;
  • Han, J. R. (Institute of Organosilicon Research and Development, Dankook University) ;
  • Kihl, C. N. (Institute of Organosilicon Research and Development, Dankook University)
  • 강두환 (단국대학교 유기규소연구소) ;
  • 심양 (단국대학교 유기규소연구소) ;
  • 양재건 (단국대학교 유기규소연구소) ;
  • 한정련 (단국대학교 유기규소연구소) ;
  • 길충남 (단국대학교 유기규소연구소)
  • Published : 1988.04.01

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Abstract

Soluble poly(dimethyl-co-methylphenylsilylene) (PDMPS) block copolymers with high molecular were prepared by copolymerizing dimethyldichlorosilane with methylphenyldichlorosilane using Na/K alloy and 2-N, N-dimethylaminonaphthalene co-catalyst, and the chemical structure was identified by IR, UV, and NMR. According to the mole ratio of the reactants and the reaction conditions, block units of (Me2Si) and (PhMeSi) in PDMPS copolymer, melting point, molecular weight change, yield, and solubility of PDMPS were measured. The block copolymer was white solid. The activation energies for the depolymerization of polydimethylsilane(PDMS), polymethylphenylsilane(PMPS), and PDMPS were determined by dynamic TGA data. The depolymerization activation energies for PDMS, PMPS, and PDMPS were 52, 71, 58 kcal/g$.$mole, respectively.

Keywords