화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.7, No.5, 813-822, October, 1996
Export Citation
총설-이산화탄소로부터 Poly(alkylene carbonate)의 합성
Synthesis of Poly(alkylene carbonate) from Carbon Dioxide
이윤배, 최정현
초록
온실효과에 주요한 기여를 하는 이산화탄소를 줄이기 위하여 새로운 형태의 고분자인 폴리(알킬렌 카보네이트)가 합성되어졌다. 이산화탄소와 여러 가지 에폭시드로부터 칼복시산의 아연염을 촉매로 하여 교대 공중합체가 만들어졌다. 중합체의 수 평균 분자량은 50,000 정도이면 중합 분산도는 5∼10 정도로 비교적 넓은 분포를 갖는다. 이 중합체는 비 결정성이고, 투명한 물질로써 열분해가 쉽게 일어난다. 높은 온도와 불활성 분위기 하에서도 완벽한 분해가 일어나 탄소 잔류물을 남기지 않는 것으로 알려졌다. 간단한 에폭시드와의 공중합체의 물리적인 성질을 개선하기 위하여 입체 장애가 큰 에폭시드와의 삼원 공중합체도 만들 수 있다. 이러한 분해성을 이용하여 세라믹, 금속, 전자 산업용 바인더나 lost-foam casting에 활용이 검토되었다. 또한 포장용 필름이나 가소제로의 활용도 연구될 수 있을 것으로 기대된다.
In order to reduce carbon dioxide, one of the major greenhouse gases, a new type of copolymer, poly(alkylene carbonate) has been synthesized. The alternating copolymers have been obtained from carbon dioxide and various epoxides with zinc carboxylate as a catalyst. The number-average molecular weight of the polymer is about 50,000 and polydispersity is rather broad(5∼10). The polymers are amorphous, and glass-clear materials that exhibit unusually facile and clean thermal decomposition behavior. Complete decomposition with no carbon residue is observed at elevated temperature even in an inert atmosphere. Terpolymers with bulkier epoxides improve the physical properties of the copolymer with simple epoxides. The decomposition properties of the polymer provide versatile applications such as ceramic, metal, and electronic binders and lost-foam casting. Further application of the polymer for the barrier film or the plasticizer will be investigated.
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