Crystallization and phase behavior of crystalline syndiotactic 1,2-polybutadiene/isotactic polypropylene blends in solution-cast thin films
文献类型：期刊论文
| 作者 | Chen, Y; Chen, Y; Yang, DC |
| 刊名 | POLYMER
 |
| 出版日期 | 2006-02-22 |
| 卷号 | 47期号:5页码:1667-1673 |
| 关键词 | Isotactic Polypropylenes Blends Syndiotactic 1 2-polybutadiene |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2006.01.008 |
| 英文摘要 | Crystallization and phase behavior in solution-cast thin films of crystalline syndiotactic 1,2-polybutadiene (s-1,2-PB) and isotactic polypropylene (i-PP) blends have been investigated by transmission electron microscopy (TEM), atomic force microscopy (AFM) and field-emission scanning electron microscopy (FESEM) techniques. Thin films of pure s-1,2-PB consist of parallel lamellae with the c-axis perpendicular to the film plane and the lateral scale in micrometer size, while those of i-PP are composed of cross-hatched and single-crystal-like lamellae. For the blends, TEM and AFM observations show that with addition of i-PP, the s-1,2-PB long lamellae become bended and i-PP itself tends to form dispersed convex regions oil a continuous s-1,2-PB phase even when i-PP is the predominant component, which indicates a strong phase separation between the two polymers during film formation. FESEM micrographs of both lower and upper surfaces of the films reveal that the s-1,2-PB lamellae pass through i-PPconvex regions from the bottom, i.e. the dispersed i-PP regions lie on the continuous s-1,2-PB phase. The structural development is attributed to an interplay of crystallization and phase separation of the blends in the film forming process. With solvent evaporation, s-1,2-PB would crystallize first forming the continuous phase, while the segregated i-PP phase accumulated on s-1,2-PB and crystallized subsequently, forming dispersed i-PP regions. (c) 2006 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000235746700024 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/59259]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yang, DC |
| 作者单位 | Chinese Acad Sci, Changchun Inst Appl Chem, Grad Sch, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Y,Chen, Y,Yang, DC. Crystallization and phase behavior of crystalline syndiotactic 1,2-polybutadiene/isotactic polypropylene blends in solution-cast thin films[J]. POLYMER,2006,47(5):1667-1673. |
| APA | Chen, Y,Chen, Y,&Yang, DC.(2006).Crystallization and phase behavior of crystalline syndiotactic 1,2-polybutadiene/isotactic polypropylene blends in solution-cast thin films.POLYMER,47(5),1667-1673. |
| MLA | Chen, Y,et al."Crystallization and phase behavior of crystalline syndiotactic 1,2-polybutadiene/isotactic polypropylene blends in solution-cast thin films".POLYMER 47.5(2006):1667-1673. |
入库方式： OAI收割
来源：化学研究所
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