Crystallization and orientation of polyethelene in anodic aluminum oxide templates
文献类型：期刊论文
| 作者 | Wu Hui1; Wang Wei; Su Zhaohui |
| 刊名 | Acta polymerica sinica
 |
| 出版日期 | 2009-05-20 |
| 期号 | 5页码:425-429 |
| 关键词 | Orientation Crystallization Aao templates Pe nanofibers |
| ISSN号 | 1000-3304 |
| 通讯作者 | Wu hui() |
| 英文摘要 | Recently structure and morphology of polymers under nanoscale confinements have attracted much attention. for semicrystalline polymer materials, the degree of crystallinity and the orientation of the crystalline domains are important factors in controlling their physical properties, and many efforts have been devoted to the understanding of crystallization and orientation of polymers in nano-cylindrical confinements. in this paper, polyethylene nanofibers of 200 nm diameter were prepared by infiltrating porous anodic aluminum oxide (aao) templates with polymer melt, and the crystallinity and orientation of polyethylene crystals in the nanofibers were studied by ftir spectroscopy, polarized light microscopy (plm), and x-ray diffraction (xrd). ftir results showed that the degree of crystallinity in the nanofibers was lower than that in the bulk due to the confinement of the nanopores, and the crystals formed in the nanofibers oriented preferentially with the b axis aligning parallel to the axial direction of the nanofibers, while the a axis was perpendicular to the nanofiber direction. xrd data further confirmed that the b axis of the crystals was parallel to the fiber direction. it was found that the nuclei located mainly at the interface between the nanotemplate and the polymer bulk and radially grew with the fastest crystallographic growth direction (b axis) toward the bulk and the nanofibers. the crystals formed in the bulk were typical banded spherulites, while in the nanofibers, only the crystals with the growth directions compatible with the cylindrical confinement imposed by the pore geometry can grow bigger and other growth directions were suppressed, leading to the preferred orientation of the crystals with the b axis aligning along the nanofiber direction. |
| WOS关键词 | CONFINED CRYSTALLIZATION ; POLYMER CRYSTALLIZATION ; CRYSTAL ORIENTATIONS ; DIBLOCK COPOLYMER ; POLYETHYLENE ; BEHAVIOR ; FILMS ; POLYSTYRENE ; BLEND ; PCL |
| WOS研究方向 | Polymer Science |
| WOS类目 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000266219600004 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2397847 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wu Hui |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu Hui,Wang Wei,Su Zhaohui. Crystallization and orientation of polyethelene in anodic aluminum oxide templates[J]. Acta polymerica sinica,2009(5):425-429. |
| APA | Wu Hui,Wang Wei,&Su Zhaohui.(2009).Crystallization and orientation of polyethelene in anodic aluminum oxide templates.Acta polymerica sinica(5),425-429. |
| MLA | Wu Hui,et al."Crystallization and orientation of polyethelene in anodic aluminum oxide templates".Acta polymerica sinica .5(2009):425-429. |
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来源：中国科学院大学
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