• Graft Copolymerization of Vinylic Monomers on Cellulose Acetate Containing Vinyl Groups
  • Loo S, Kim JW, Oh YS, Lee HS
  • 비닐기를 함유한 셀룰로오스 아세테이트의 합성 및 비닐 단량체와의 그래프트 공중합
  • 이수, 김진우, 오영세, 이화섭
Abstract
Partially hydrolyzed cellulose acetate (HCA), which contains enough free hydroxyl groups and exhibits good solubility in most organic solvents, was reacted with alkyl isocyanate (AIC) in pyridine to introduce polymerizable vinyl groups (0.6 ∼ 1.0 meq/g) through urethane linkage. And, graft copolymerization with several vinylic monomers was also carried out with various initiators. The effect of the types of initiators on the graft yield was very significant and in the order of AIBN g of the crosslinked blend film was also reduced. Different from the simple solution blend of HCA and homoPAN, it was thought that PAN homopolymer in the crosslinked blend film was not simply dispersed but combined through strong physical interaction.

부분 가수분해되어 free hydroxyl기를 함유하고 용해성이 우수한 셀룰로오스 아세테이트 (HCA)를 allyl isocyanate (AIC)와 반응시켜 urethane linkage를 통한 비닐기를 직접 도입한 후, 이를 여러 비닐 단량체 (AN, AM 및 AA)와 여러 종류의 개시제 및 반응 조건 하에서 그래프트 공중합을 실시하였다. 얻은 HCA-AIC adduct의 비닐기 함량은 0.6∼1.0meq/g이었다. 개시제에 대한 그래프트 수율은 AIBNg의 감소를 확인할 수 있었으며, 가교 blend film에 함유된 PAN 단일중합체는 그래프트 공중합체에 단순히 분산되어 있는 것이 아니라, 강한 물리적 결합을 가지고 존재하는 것으로 판단된다.

Keywords: vinyl containing cellulose acetate; graft copolymerization; in-situ blending

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This Article

  • 1996; 20(6): 1014-1023

    Published online Nov 25, 1996