디하이드로트리사이클로펜타디엔-에틸렌 공중합체의 제조
Copolymerization of Dihydrotricyclopentadiene and Ethylene
- 주제(키워드) 에틸렌
- 발행기관 아주대학교
- 지도교수 이분열
- 발행년도 2010
- 학위수여년월 2010. 2
- 학위명 석사
- 학과 및 전공 일반대학원 분자과학기술학과
- 실제URI http://www.dcollection.net/handler/ajou/000000010423
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
Regioselective partial hydrogenation of tricyclopentadiene (TCPD) was achieved with a high turnover number of 10000 by catalysis with a N-heterocyclic carbene palladium complex. Copolymerization of ethylene and the partially hydrogenated product, dihydrotricyclopentadiene (HTCPD), was realized using a catalytic system of [8-(？？5-C5Me4)-2-Me(C9H8N)-？？N]TiMe2 (C9H10NH = 1,2,3,4-tetrahydroquinoline) activated with (Ph3C)+[B(C6F5)4]-. The copolymer was unambiguously characterized through the analysis of one- and two-dimensional NMR spectra. The monomer reactivity ratios, rethylene and rHTCPD, determined through the Fineman-Ross plot, were 2.8 and 0.025, respectively, indicating negligible successive insertion of two HTCPD. A nearly alternating copolymer with a HTCPD content of 45 mol% was obtained with a satisfactory activity (4.7 ？~106 g/molTi⋅h), of which Tg was 177oC, significantly higher than that of norbornene/ethylene copolymer at the same cycloolefin content. Tensile stress-strain curves indicated that the brittleness observed for a high Tg norbornene/ethylene copolymer was relieved to show some ductile property for the HTCPD/ethylene copolymer of the same level of high Tg.
more목차
1. Introduction
2. Result and Discussion
2.1 Preparation of HTCPD monomer
2.2 Copolymerization reactions
2.3 Tensile properties
2.4 Summary and Conclusion
3. Experiment Section
4. Reference
5. Supporting Information
