abs

학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 09월 04일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Polymerization of High-Molecular-Weight Poly(1,4-butylene carbonate-co-terephthalate) and its thermal properties

등록일
2014년 8월 28일 14시 36분 14초
접수번호
0997
발표코드
POLY.P-49 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
고분자화학
저자 및
공동저자
박성연, 이분열*
아주대학교 분자과학기술학과, Korea

The condensation copolymerizations of 1,4-butanediol (BD), dimethyl carbonate (DMC), and dimethyl terephthalate (DMT) were conducted by a two-step procedure using sodium alkoxide (0.1?0.2 mol%) as a catalyst with a variation of [DMT]/[BD] feed ratio. In the first step, oligomers bearing almost equal numbers of hydroxyl and methoxycarbonyl end-groups were generated, which were polycondensed mostly by the elimination of methanol at 190??210 °C under a reduced pressure. By this procedure, high-molecular-weight poly(1,4-butylene carbonate-co-terephthalate)s (PBCTs) were easily prepared with Mw 60000??200 000 in a reasonably short reaction time, totaling 8.5 h, and even in a large scale (110 g polymer/batch) using 250 mL glass reactor. The PBCTs prepared at high [DMT]/[BD] feed ratio 0.38??0.50 were a semi-crystalline polymer with a fast crystallization rate showing the melting temperature in the range 112?146 °C, which was adjustable by the [DMT]/[BD] feed ratio. These thermal properties are comparable to those of the commercialized compostable polyesters such as PLA, PHA, PBAT, and PBSA.


상단으로