Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Copolymerization of 2-Hydroxyethyl Methacrylate with Functional Silane Monomers

2-히드록시에틸 메타크릴레이트와 기능성 사이레인 단량체와의 공중합에 관한 연구

  • Sung, Yong-Kiel (Dept. of Chemistry, Dongguk University) ;
  • Lee, Chang-Gyu (Dept. of Chemistry, Dongguk University) ;
  • Jung, Il-Nam (Division of Applied Chemistry, Korea Advanced Institute of Sceince and Technology)
  • 성용길 (동국대학교 화학과) ;
  • 이창규 (동국대학교 화학과) ;
  • 정일남 (한국과학기술원 응용화학연구부)
  • Published : 1987.06.01
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Abstract

2-Hydroxyethyl methacrylate(HEMA) was copolymerized with allyltrimethylsilane- (ATMS) and allylt.imethoxysilane(ATMOS) at 70。C in N, N'dimethylformamide- (DMV) using $\alpha$ , $\alpha$'-azobisisobutyronitrile(AIBN). The compositions of unreacted monomers were determined by gas chromatographic analysis. The monomer reactivity ratios were determined by Fireman-Ross, Helen-Tiidus and intersection methods. The average values are as follows : $$r_1(HEMA) : 6.62 $\pm$ 0.07, r_2(ATMS) : 0.07 $\pm$ 0.01 for HEMA-ATMS system.$$ $$r_l(HEMA) : 4.09 $\pm$ 0.14, r_2(ATMOS) : 0.06 $\pm$ 0.01 for HEMA-ATMOS toys tem.$$ The lower rl(HEMA) In the HEMA-ATMOS system as compared to HEMA ATMS system may be contributed to higher relative reactivity of ATMOS toward the poly(HEMA) radical. The compositions of synthesized copolymers were determined from silicon con tents estimated gravimetrically. The thermal stabilities of the copolymers were investigated by thermogravimetry(TG). The enthalpic changes associated with the endothermic transition were evaluated by differential scanning calorimetry(DSC). The swelling properties of the copolymers in water were also investigated.

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