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Hexadecyltrimethylammonium Bromide 상이동촉매에 의한 Acrylonitrile 의 라디칼 중합
박상욱,카세게르 페라니아 크리스티아와티,백재진,양삼석 ( Sang Wook Park,Christiawaty Ferania Kaseger,Jea Jin Baek,Sam Seoug Yang ) 한국화학공학회 1995 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.33 No.1
The phase-transfer polymerization of acrylonitrile system was investigated in a (NH₄)₂S₂O_8 aqueous-organic two-phase system with hexadecyltrimethylammonium bromide. The observed initial rates of polymerization were compared with those obtained from the polymerization mechanism proposed with a cyclic phase-transfer initiation step. The rate of polymerization was found to be proportional to the combined terms of concentrations of quaternary ammonium ion and S₂O_8^(-2) in the aqueous solution, and concentration of monomer. The rate of polymerization of acrylonitrile in the liquid-liquid heterogeneous system was interpreted with the polymerization mechanism by phase transfer catalyst applied to that by conventional initiators.
박상욱,박대원,이성수,양삼석,백재진 ( Sang Wook Park,Dae Won Park,Sung Soo Lee,Sam Seoug Yang,Jae Jin Baek ) 한국화학공학회 1996 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.34 No.2
The phase-transfer radical copolymerization of acrylonitrile with methylmethacrylate by tricaprylmethyl-ammonium chloride were investigated in a Na₂S₂O₄ aqueous-CCl₄organic two-phase system at 25℃ and under nitrogen atmosphere. The initial rate of copolymerization was found to be proportional to the concentration of [Q^+]_w, [S₂O₄^(-2)]_w^½, [CCl₄]_φ^½ and the molar ratio of feed of monomers. The observed initial rates of copolymerization were used to analyzed the copolymerization mechanism proposed with a cyclic phase-transfer initiation step.
박상욱,박대원,이성수,양삼석,백재진 ( Sang Wook Park,Dae Won Park,Sung Soo Lee,Sam Seoug Yang,Jae Jin Baek ) 한국화학공학회 1996 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.34 No.2
The phase-transfer radical copolymerization of acrylonitrile with methylmethacrylate by tricaprylmethyl-ammonium chloride were investigated in a Na₂S₂O₄ aqueous-CCl₄ organic two-phase system at 25℃ and under nitrogen atmosphere. The monomer reactivity ratios, r₁ and r₂ were obtained by the copolymerization mechanism with a cyclic phase-transfer initiation step and compared with those obtained by using the Kelen-Tu¨do¨s method and Fineman-Ross method. Their values were 0.11 and 2.30, respectively.