Translation and Rotation of Spherulites during the Crystallization of Isotactic Polypropylene with Reduced Chain Entanglements
文献类型：期刊论文
| 作者 | Wang, Xuehui1,2; Wang, Zhigang1,3; Luo, Kaifu1; Huang, Yong2 |
| 刊名 | MACROMOLECULES
 |
| 出版日期 | 2011-04-26 |
| 卷号 | 44期号:8页码:2844-2851 |
| ISSN号 | 0024-9297 |
| DOI | 10.1021/ma1025913 |
| 英文摘要 | The isothermal crystallization of isotactic polypropylene (iPP) spherulites was observed under chain entanglements, reduced chain entanglements, and unconfined thick film conditions using polarized optical microscopy (POM). While spherulite translations and rotations were not observed in entangled iPP samples, the growing spherulites in the entanglements-reduced crystallizing melt conspicuously translated and/or rotated, even when their sizes exceeded the sample film thicknesses. Our entanglements-reduced samples were prepared by first slowly crystallizing a commercial entangled iPP in mineral oil (and then extracting the mineral oil with hexane) and by a direct polymerization method, respectively. The purity of the entanglements-reduced iPP samples and the extent of chain entanglements were examined by thermogravimetric analysis (TA), gel permeation chromatography (GPC), and rheological measurements. Our findings seem to provide new clues into the crystallization of high molecular mass polymers. |
| 语种 | 英语 |
| WOS记录号 | WOS:000289593200055 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/71657]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, Zhigang |
| 作者单位 | 1.Univ Sci & Technol China, CAS Key Lab Soft Matter Chem, Dept Polymer Sci & Engn, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xuehui,Wang, Zhigang,Luo, Kaifu,et al. Translation and Rotation of Spherulites during the Crystallization of Isotactic Polypropylene with Reduced Chain Entanglements[J]. MACROMOLECULES,2011,44(8):2844-2851. |
| APA | Wang, Xuehui,Wang, Zhigang,Luo, Kaifu,&Huang, Yong.(2011).Translation and Rotation of Spherulites during the Crystallization of Isotactic Polypropylene with Reduced Chain Entanglements.MACROMOLECULES,44(8),2844-2851. |
| MLA | Wang, Xuehui,et al."Translation and Rotation of Spherulites during the Crystallization of Isotactic Polypropylene with Reduced Chain Entanglements".MACROMOLECULES 44.8(2011):2844-2851. |
入库方式： OAI收割
来源：化学研究所
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