| 학회 |
한국고분자학회 |
| 학술대회 |
2002년 봄 (04/12 ~ 04/13, 서울대학교) |
| 권호 |
27권 1호, p.60 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
The Effects of Comonomer Types on Microstructure of Ethylene Copolymers |
| 초록 |
Metallocene-catalyst based copolymerization of ethylene and a-olefins has recently been employed to synthesize polymers with improved physical properties (yield strength, elongation, fracture toughness, etc). This physical property is related to their comonomer contents. It is well established that melting temperature, crystallinity, and crystal thickness are reduced by the presence of short chain branches, nearly independent of branch types (except methyl), leading to the logical conclusion that such comonomer units are excluded from the crystalline region. However, significant the difference in tensile properties between 1-butene and 1-octene copolymers is well known but remains unexplained. We have employed SAXS, WAXS and AFM to investigate the difference in the microstructure between the butene and octene copolymers of the same comonomer composition. Our results indicate that the primary difference lies in the interfacial region and the lateral size of the lamellar crystallites. |
| 저자 |
조태연1, 정원희2, 정영석3, 김지아4, T. Hashimoto*5, L. Mandelkern**6, 윤도영7
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| 소속 |
1서울대, 2*Dept. of Polymer Chemistry, 3Graduate School of Engineering, 4Kyoto Univ., 5Kyoto, 6JAPAN, 7**Dept. of chemistry |
| 키워드 |
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| E-Mail |
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| VOD |
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