Shear-induced orientation in the crystallization of an isotactic polypropylene nanocomposite
文献类型：期刊论文
| 作者 | Sun, Tongchen1,2,3; Chen, Fenghua1,2; Dong, Xia1,2; Zhou, Yong1,2,3; Wang, Dujin1,2; Han, Charles C.1,2 |
| 刊名 | Polymer
 |
| 出版日期 | 2009-05-22 |
| 卷号 | 50期号:11页码:2465-2471 |
| 关键词 | Shear-induced crystallization Polypropylene nanocomposite Rheology |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2009.03.048 |
| 通讯作者 | Dong, xia(xiadong@iccas.ac.cn) |
| 英文摘要 | Isothermal crystallization of isotactic polypropylene (ipp)/organic montmorillonite (ommt) binary composite under shear field was investigated by in situ polarized optical microscopy, rheometry and transmission electron microscopy. when shear strain was small, shear flow could enhance the crystallization of ipp, and the crystallizing entity was spherulitic in ipp/ommt composite in which the ommt content was below the percolation threshold. with shear strain increasing, the orientation extent became stronger and cylindrites and strings of spherulites appeared in these samples. however, for ipp/ommt composite with ommt content higher than the percolation threshold, when the shear strain was not big enough to destroy the fillers network in the matrix, the crystallization of ipp was similar with that of the un-sheared sample. when shear strain was large enough, the fillers network was destroyed and clay layers were aligned along the flow direction. there formed oriented crystals including cylindrites and strings of spherulites, which were much smaller in size than those formed in the previous case, because the aligned clay layers acted as heterogeneous nucleation agents to promote crystallization of ipp. (c) 2009 elsevier ltd. all rights reserved. |
| WOS关键词 | LAYERED SILICATE NANOCOMPOSITES ; MOLECULAR-WEIGHT ; SHISH-KEBAB ; MECHANICAL-PROPERTIES ; FLOW ; POLYMER ; MELTS ; COMPOSITES ; BEHAVIOR ; POLY(PROPYLENE) |
| WOS研究方向 | Polymer Science |
| WOS类目 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000266319100016 |
| 出版者 | ELSEVIER SCI LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2397305 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Dong, Xia |
| 作者单位 | 1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, State Key Lab Polymer Phys & Chem, Joint Lab Polymer Sci & Mat, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Tongchen,Chen, Fenghua,Dong, Xia,et al. Shear-induced orientation in the crystallization of an isotactic polypropylene nanocomposite[J]. Polymer,2009,50(11):2465-2471. |
| APA | Sun, Tongchen,Chen, Fenghua,Dong, Xia,Zhou, Yong,Wang, Dujin,&Han, Charles C..(2009).Shear-induced orientation in the crystallization of an isotactic polypropylene nanocomposite.Polymer,50(11),2465-2471. |
| MLA | Sun, Tongchen,et al."Shear-induced orientation in the crystallization of an isotactic polypropylene nanocomposite".Polymer 50.11(2009):2465-2471. |
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来源：中国科学院大学
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