Shear Effects on Crystallization Behavior of iPP/PEcO Blends
文献类型：期刊论文
| 作者 | Wen Hui-Ying1,2; Xiao Sheng-Ling1; Li Hong-Fei2; Jiang Shi-Chun2; An Li-Jia2 |
| 刊名 | CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
 |
| 出版日期 | 2011-10-10 |
| 卷号 | 32期号:10页码:2427-2431 |
| 关键词 | Shear Polymer Crystallization Mesophase Precursor Structure |
| ISSN号 | 0251-0790 |
| 英文摘要 | Crystallization behavior of sheared iPP/PEcO blends were investigated via small-angle X-ray scattering (SAXS), Wide-angle X-ray scattering (WAXS) and Polarizing Optical Microscope (POM). The results indicate that the morphology of sphere crystal obviously changes with PEcO content in the blend. Shear not only increases the density of spherulite but also induces the formation of fiber-like crystal. The lamellar orientation and crystallite orientation were affected by shear, especially the orientation of lamellae was more obvious than that of crystallites. The degree of lamellar orientation enhances with the increasing amount of elastomer, whereas the degree of crystallite orientation decreases with the increasing of elastomer. In situ synchrotron SAXS data shows that the long period of lamellae decreases at the early period of crystallization and afterwards remains fixed. The high shear intensity decreases the induction time for crystallization and obviously accelerates the process of crystallization kinetics. The evolvement of crystalline structure and the degree of orientation differences between crystallite and lamellae of the blend crystallization under shear may support the mesomorphic phase concept of flexible polymer crystallization process proposed by Strobl. Based on all the analyses a relatively stable mesomorphic structure is thought to have formed before shear is composed and the shear-induced initial states of polymer play an important role in affecting the crystallization behavior. |
| 语种 | 英语 |
| WOS记录号 | WOS:000296654400036 |
| 出版者 | HIGHER EDUCATION PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/72589]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wen Hui-Ying |
| 作者单位 | 1.NE Forestry Univ, Heilongjiang Prov Key Lab, Harbin 150040, Peoples R China 2.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 | Wen Hui-Ying,Xiao Sheng-Ling,Li Hong-Fei,et al. Shear Effects on Crystallization Behavior of iPP/PEcO Blends[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2011,32(10):2427-2431. |
| APA | Wen Hui-Ying,Xiao Sheng-Ling,Li Hong-Fei,Jiang Shi-Chun,&An Li-Jia.(2011).Shear Effects on Crystallization Behavior of iPP/PEcO Blends.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,32(10),2427-2431. |
| MLA | Wen Hui-Ying,et al."Shear Effects on Crystallization Behavior of iPP/PEcO Blends".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 32.10(2011):2427-2431. |
入库方式： OAI收割
来源：化学研究所
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