abs

학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 09월 03일 23시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제122회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Preparation of ABA-type Olefin Triblock Copolymers based on Peroxide-Mediated Alkyl-Alkyl Coupling reaction

등록일
2018년 8월 21일 20시 20분 55초
접수번호
0608
발표코드
POLY.P-11 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 18일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Polymer Chemistry
저자 및
공동저자
Taejin Kim, Bun Yeoul Lee*, Hyunju Lee1
Department of Molecular Science and Technology, Ajou University, Korea
1Department of molecular science and technology, Ajou University, Korea

In this study, a practical and simple method for the preparation of ABA-type olefin triblock copolymers, e.g., PE-b-poly(ethylene-co-propylene)-b-PE has been described. The performance of the so-called "coordinative chain transfer polymerization" (CCTP) by sequential feed of ethylene and ethylene/propylene mixed gas generated a Zn-bound diblock copolymer (i.e., (PE-b-poly(ethylene-co-propylene)yl)2Zn). Treatment of the Zn-bound diblock copolymer with lauroyl peroxide (CH3(CH2)10C(O)O-OC(O)(CH2)10CH3) lead to a C(sp3)-C(sp3) coupling reaction between the two diblock chains(PE-b-poly(ethylene-co-propylene)) bound on the zinc site and an ABA-type olefin triblock copolymer, PE-b-poly(ethylene-co-propylene)-b-PE, was formed. Upon the treatment with lauroyl peroxide, the number average molecular weight increased by 1.5–1.7 times. The occurrence of the coupling reaction was verified using a model compound, 〖(Oct)〗_2Zn. The ABA-type triblock copolymer exhibited thermoplastic elastomeric properties and dramatically improved mechanical properties (twice the tensile strength and ten-fold increase in the elongation at break) as compared to the diblock congener.


상단으로