Study of beta-alpha recrystallization of the polypropylene
文献类型：期刊论文
| 作者 | Yuan, Q; Jiang, W; An, LJ |
| 刊名 | COLLOID AND POLYMER SCIENCE
 |
| 出版日期 | 2004-09-01 |
| 卷号 | 282期号:11页码:1236-1241 |
| ISSN号 | 0303-402X |
| 关键词 | Polypropylene (Pp) Recrystallization Alpha And Beta Modifications |
| DOI | 10.1007/s00396-004-1063-x |
| 英文摘要 | The crystalline modifications alpha and beta of polypropylene (PP) were studied by using polarized light microscopy (PLM), wide-angle X-ray diffraction (WAXD), and differential scanning calorimetry (DSC). Typically beta crystals surrounded by alpha spherulites were observed at low temperature. With increasing temperature the beta crystals melted and a new crystal appeared. More interestingly, the melting temperature of the new crystal was about 5degrees higher than that of alpha spherulites originally present in the sample formed isothermally. It was assumed that this new crystal was the recrystalline alpha crystal. This assumption was supported by the DSC results. Furthermore, the crystallization kinetics of the PP used was studied on the basis of the traditional Avrami analysis. As a result, the Avrami exponents of crystallization temperature from 120 to 130degreesC ranged between 4.21 and 3.60, indicating that the crystallization mechanism of PP order melt was spherulitic growth and random nucleation. |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000223957200008 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/55323]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Jiang, W |
| 作者单位 | Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Q,Jiang, W,An, LJ. Study of beta-alpha recrystallization of the polypropylene[J]. COLLOID AND POLYMER SCIENCE,2004,282(11):1236-1241. |
| APA | Yuan, Q,Jiang, W,&An, LJ.(2004).Study of beta-alpha recrystallization of the polypropylene.COLLOID AND POLYMER SCIENCE,282(11),1236-1241. |
| MLA | Yuan, Q,et al."Study of beta-alpha recrystallization of the polypropylene".COLLOID AND POLYMER SCIENCE 282.11(2004):1236-1241. |
入库方式： OAI收割
来源：化学研究所
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