In situ AFM study of the growth of banded hedritic structures in thin films of isotactic polystyrene
文献类型：期刊论文
| 作者 | Duan, YX; Zhang, Y; Yan, SK; Schultz, JA |
| 刊名 | POLYMER
 |
| 出版日期 | 2005-10-07 |
| 卷号 | 46期号:21页码:9015-9021 |
| 关键词 | Crystallization Thin Film Isotactic Polystyrene |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2005.07.024 |
| 英文摘要 | The growth of banded hedrites of isotactic polystyrene (iPS) is followed in situ, using atomic force microscopy (AFM). The melt layer surrounding the growing hedritic front is much thinner than both the hedrite front and the far-field melt. Growth occurs simultaneously in three dimensions: radially, eircurnferentially and height. The height of the hedrite growth front being so much higher than the adjacent molten pool, the observed propagation of the front requires that it be covered by a thin film of molten material, likely drawn up the face of the front by capillarity. As the hedritic front grows in height, it demands material at a higher rate than can be delivered from the far-field melt and the stacked lamellae stop growing, layer by layer, from the top downward, until only the basal lamella continues to grow (at a constant velocity). The kinetics of the position of the lowest point ahead of the growth front slows with time during this process. Supplying only the basal layer, the adjacent molten pool is replenished and now begins to feed new layers of growing lamellae as the process repeats itself. The creation of the new lamellar layers appears to be coupled to morphological instability of the basal layer, in the form of growth front serrations, likely causal of the giant screw dislocations. (c) 2005 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000232172900014 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/57087]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yan, SK |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China 2.Univ Delaware, Dept Chem Engn, Newark, DE 19716 USA |
| 推荐引用方式 GB/T 7714 | Duan, YX,Zhang, Y,Yan, SK,et al. In situ AFM study of the growth of banded hedritic structures in thin films of isotactic polystyrene[J]. POLYMER,2005,46(21):9015-9021. |
| APA | Duan, YX,Zhang, Y,Yan, SK,&Schultz, JA.(2005).In situ AFM study of the growth of banded hedritic structures in thin films of isotactic polystyrene.POLYMER,46(21),9015-9021. |
| MLA | Duan, YX,et al."In situ AFM study of the growth of banded hedritic structures in thin films of isotactic polystyrene".POLYMER 46.21(2005):9015-9021. |
入库方式： OAI收割
来源：化学研究所
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