Reexamination of shish kebab formation in poly(ethylene oxide) melts
文献类型：期刊论文
| 作者 | Zhang, LN ; Shi, WC ; Cheng, H ; Han, CC |
| 刊名 | POLYMER
 |
| 出版日期 | 2014 |
| 卷号 | 55期号:12页码:2890 |
| 关键词 | Oriented network Shear induced crystallization Two-step shear |
| ISSN号 | 0032-3861 |
| 通讯作者 | Han, CC (reprint author), Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China. |
| 中文摘要 | Although recent experiments concerning shear effects on crystallization in polymer melts are inclined to support the oriented network model, two important questions still remain open: the effect of polydispersity on shish formation and the growth mechanism of shish. In this work, a narrowdisperse poly(ethylene oxide) (PEO) is chosen as a model system to clarify the role of polydispersity for shish kebab formation after a pulse of flow. The intact structure of shish kebab observed via scanning electron microscopy (SEM), with a 150 nm wide shish core and perpendicular epitaxially grown kebabs with a long period of about 35 nm, reveals that polydispersity is not a necessary condition for shish kebab formation. On the other hand, two-step shear experiment is utilized to elucidate the growth mechanism of shish. It has been proved in a latest study that shish growth is related to the size of the growing nuclei (interval time) and second step shear rate. In this manuscript, a third factor, shear time in the second step shear, is found to be an effective factor to promote the growth of shish, which might provide a convenient processing method. (C) 2014 Elsevier Ltd. All rights reserved. |
| 资助信息 | National Natural Science Foundation of China [50930003, 21174152] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59618]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang, LN,Shi, WC,Cheng, H,et al. Reexamination of shish kebab formation in poly(ethylene oxide) melts[J]. POLYMER,2014,55(12):2890. |
| APA | Zhang, LN,Shi, WC,Cheng, H,&Han, CC.(2014).Reexamination of shish kebab formation in poly(ethylene oxide) melts.POLYMER,55(12),2890. |
| MLA | Zhang, LN,et al."Reexamination of shish kebab formation in poly(ethylene oxide) melts".POLYMER 55.12(2014):2890. |
入库方式： OAI收割
来源：物理研究所
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