Solid-state NMR characterizations on phase structures and molecular dynamics of poly(ethylene-co-vinyl acetate)
文献类型：期刊论文
| 作者 | Wang, Liying; Fang, Pengfei; Ye, Chahui; Feng, Jiwen |
| 刊名 | JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
 |
| 出版日期 | 2006-10-01 |
| 卷号 | 44期号:19页码:2864-2879 |
| 关键词 | crystallization poly(ethylene-co-vinyl acetate) solid-state NMR |
| 英文摘要 | Solid-state nuclear magnetic resonance spectroscopy and relaxation measurements, together with DSC, have been used to elucidate the structures and molecular dynamics in poly(ethylene-co-vinyl acetate) (EVA). It has been found that besides immobile orthorhombic and monoclinic crystalline phases, the third mobile crystalline phase (possibly the phase) of a considerable amount (36% of total crystalline phases) appears in the EVA samples, which forms during room-temperature aging as a result of the secondary crystallization and melts at temperature somewhat higher than room temperature. Such a mobile crystalline phase has not only the well-defined chemical shift of its own, but also has different molecular mobility from the orthorhombic phase. The mobile crystalline phase is characterized by the rapid relaxation of the longitudinal magnetization, which is caused by conventional spin-lattice relaxation, while the slow relaxation of the longitudinal magnetization occurring in the orthorhombic phase is originated from the chain diffusion. In addition, the amorphous phase also contains two components: an interfacial amorphous phase and a melt-like amorphous phase. (c) 2006 Wiley Periodicals, Inc. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Polymer Science |
| 研究领域[WOS] | Polymer Science |
| 关键词[WOS] | RESOLUTION C-13 NMR ; DIMETHYLAMINOETHYL METHACRYLATE COPOLYMERS ; SIDE-GROUP LOCATION ; ETHYLENE COPOLYMERS ; CHAIN DIFFUSION ; CRYSTALLINE PHASE ; TOPOLOGICAL CONSTRAINTS ; POLYETHYLENE FIBERS ; MELTING BEHAVIOR ; N-ALKANES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000240753700011 |
| 公开日期 | 2015-07-28 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/4783]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Grad Univ, Chinese Acad Sci, Beijing 100049, Peoples R China 3.Wuhan Univ, Dept Phys, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Liying,Fang, Pengfei,Ye, Chahui,et al. Solid-state NMR characterizations on phase structures and molecular dynamics of poly(ethylene-co-vinyl acetate)[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2006,44(19):2864-2879. |
| APA | Wang, Liying,Fang, Pengfei,Ye, Chahui,&Feng, Jiwen.(2006).Solid-state NMR characterizations on phase structures and molecular dynamics of poly(ethylene-co-vinyl acetate).JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,44(19),2864-2879. |
| MLA | Wang, Liying,et al."Solid-state NMR characterizations on phase structures and molecular dynamics of poly(ethylene-co-vinyl acetate)".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 44.19(2006):2864-2879. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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