| 학회 |
한국고분자학회 |
| 학술대회 |
2004년 봄 (04/09 ~ 04/10, 고려대학교) |
| 권호 |
29권 1호, p.57 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
Solid-State NMR Study of Amorphous Region in Semicrystalline Polyethylenes |
| 초록 |
It is well known that incorporation of a small amount of short chain branches has a dramatic effect on the mechanical properties of polyethylene. Although extensive research work has been carried out to study the structural changes caused by the short branches in the lamellar crystalline region, few studies have been done concerning the noncrystalline region. In this study, we employed the rotor encoded rotational echo double resonance (REREDOR) technique of solid-state NMR method to investigate the chain dynamics in the amorphous regions of two polyethylene samples, namely linear polyethylene and an ethylene-1-hexene copolymer, at temperatures around the β transition (~250K). The dynamics was studied by extracting information on the heteronuclear dipolar coupling, which in turn gives an idea on the order in that region. |
| 저자 |
신은지1, 윤도영1, R. Graf2, H.W. Spiess3
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| 소속 |
1서울대, 2Max Planck Institute for Polymer Research, 3Postfach 3148 |
| 키워드 |
solid state NMR; semicrystalline polyethylene; amorphous region
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| E-Mail |
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