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디하이드로트리사이클로펜타디엔-에틸렌 공중합체의 제조
- Alternative Title
- Yu Seung Tack
- Author(s)
- 유승택
- Alternative Author(s)
- Yu Seung Tack
- Advisor
- 이분열
- Department
- 일반대학원 분자과학기술학과
- Publisher
- The Graduate School, Ajou University
- Publication Year
- 2010-02
- Language
- eng
- Keyword
- 에틸렌; 디하이드로트리사이클로펜타디엔-에틸렌; 공중합체
- Alternative Abstract
- 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.
- Fulltext
- Appears in Collections:
- Graduate School of Ajou University > Department of Molecular Science and Technology > 3. Theses(Master)
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