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관능성 단량체 및 중합체 (제1보). Lactam 고리를 함유하고 있는 Acryloyl 형 단량체의 중합
노석균,서길수,최삼권,S. K. Noh,G. S. Sur,Sam K. Choi 대한화학회 1980 대한화학회지 Vol.24 No.1
새로운 acrylimide로서 N-acrylylpyrrolidone을 합성하였다. N-Acrylylpyrrolidone은 N-methacrylyl-lactam과는 다르게 homopolymerization을 열적으로도 함을 관찰하였다. Styrene과 N-acrylylpyrrolidone의 공중합시 각 monomer의 reactivity ratio를 구하였다. 그 결과 생성되는 copolymer는 pyrrolidone의 음이온 중합에 적절한 acyl-lactam function을 가지고 있음을 알았다. The synthesis of N-acrylylpyrrolidone has been carried out by the reaction of pyrrolidone and acrylyl chloride. The study on the copolymer of N-acrylylpyrrolidone and styrene is attempted.The copolymerization of N-acrylylpyrrolidone and styrene is carried out in benzene.Monomer reactivity ratio of N-acrylylpyrrolidone and styrene was calculated by Fineman and Ross equation. It is observed that the copolymer of N-acrylylpyrrolidone and styrene has random distributed acyl-lactam function on the vinyl polymer backbone.
Indenyl함유 Metallocene 촉매에 의한 Syndiotactic 입체규칙성 Polystyrene의 중합연구
이철수,노석균 嶺南大學校 工業技術硏究所 1994 工業技術硏究所論文集 Vol.22 No.2
(??-Indenyl)trichlorotitanium ((Ind)TiCl₃) and (??-1-trimethylsilylindenyl)-trichlorotitanium ((TMS-Ind)TiCl₃) were synthesized from the reaction of TiCl₄with trimethylsily substituted indene compounds. Syndiospecific polymerization of styrene was catalyzed by these complexes with methylaluminoxane(MAO). The atactic and syndiotactic polystyrene were separated by extracting the former with refluxing 2-butanone. The activity of (Ind)TiCl₃is similar to the that of CpTiCl₃. Very high syndiotacticity with about 94% syndiotactic index(SI) was resulted from the polystyrene prepared via (Ind)TiCl₃and (TMS-Ind)TiCl₃. The activity of the catalysts affected by changes in polymerization temperature, catalyst composition, and monomer concentration. The polymergation activity of (Ind)TiCl₃is highest at 40℃ both decreasing with either higher or lower temperature.