Rosin moiety-containing monomer(AMR) was synthesized by reacting abietic acid and glycidylmethacrylate in methylethylketone using trimethylammonium bromide as a catalyst. Photocrosslinkable polymers containing rosin moiety were then prepared by radically copolymerizing AMR with cinnamoyloxymethylmaleimide(COMMI) as a photosensitive monomer. In these copolymerizations, the COMMI feed ratios of 5 to 20 mol% were used. The contents of COMMI units in the copolymers were determined to be 4.6 to 21 mol%. The number-average molecular weights of these polymers were in the range of 20000 to 28000 polydispersity indexes were about 1.8. The glass transition temperatures were ranged between 140 and 175 ℃, and the initial decomposition temperatures were about 250 ℃. In addition, the photocrosslinking reaction of these copolymers could be traced by the UV spectroscopy and the residual yield method.

트리메틸암모니늄브롬마이드를 촉매로 사용하여 abietic acid와 glycidylmethacrylate를 메틸에틸케톤 중에서 반응시켜 로진 moiety를 함유하는 아크릴단랑체 (AMR)을 합성하였다. AMRDMF 5-20 mol%의 감광성 단량체 cinnamoyloxymethylmaleimide (COMMI)와 라디칼 공중합하여 rosin moiety를 함유하는 몇 가지 광경화성 고분자를 합성하였다. UV 분광법과 원소분석으로 결정된 공중합체중의 COMMI함량은 4.6-21 mol%정도였다. 이들 고분자의 수평균 분자량은 20000-28000 정도였고 다분산지수는 1.8 정도였으며, 또한 이들 고분자의 유리전이온도는 140-175 ℃였고 초기 열분해온도는 250 ℃정도였다. 이들 고분자의 광경화반응은 UV분광법과 잔막 수율법으로 추적될 수 있었다.

Keywords: rosin; glycidylmethacrylate; synthesisi; polymer; photocrosslinking reaction