Shear-induced epitaxial crystallization in injection-molded bars of high-density polyethylene/isotactic polypropylene blends
文献类型：期刊论文
| 作者 | Su, Run; Wang, Ke; Zhao, Ping; Zhang, Qin; Du, Rongni; Fu, Qiang; Li, Liangbin; Li, Lin |
| 刊名 | POLYMER
 |
| 出版日期 | 2007-07-13 |
| 卷号 | 48期号:15页码:4529-4536 |
| 关键词 | Epitaxial Crystallization Polyolefin Blend Injection Molding |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2007.06.001 |
| 英文摘要 | As a continuation of our previous works on exploring shear-induced epitaxial crystallization of polyolefin blends during practical molding processing [Na et at. Polymer 2005; 46, 819 and 5258], the present study focused on the importance of molecular weight on the formation of epitaxial structure in injection-molded bars of high-density polyethylene (HDPE)/isotactic polypropylene (iPP) blends. By choosing two kinds of HDPE and two kinds of iPP with high molecular weight or low molecular weight, four blends with different molecular weight combinations can be designed. After making the blends via melt mixing, the injection-molded bars were prepared in a so-called dynamic packing injection molding equipment where repeated shearing was imposed on the melts during the solidification stage. Crystal structure and orientation were estimated mainly through 2D-WAXD. Our results indicated that an appropriate matching of low molecular weight HDPE and high molecular weight iPP was more favorable for epitaxial crystallization than other component matches. The effects of orientation and epitaxy on the re-crystallization behaviors of polyolefin blends have been elucidated in detail through PLM experiments. Moreover, epitaxy has been proved to play a positive effect in determining the ultimate mechanical properties of injection-molded bars. (c) 2007 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000248535400029 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/60801]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, Ke |
| 作者单位 | 1.Sichuan Univ, Dept Polymer Sci & Mat, State Key Lab Polymer Mat & Engn, Chengdu 610065, Peoples R China 2.Univ Sci & Technol China, Dept Polymer Sci & Engn, Natl Synchrotron Radiat Lab, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, Run,Wang, Ke,Zhao, Ping,et al. Shear-induced epitaxial crystallization in injection-molded bars of high-density polyethylene/isotactic polypropylene blends[J]. POLYMER,2007,48(15):4529-4536. |
| APA | Su, Run.,Wang, Ke.,Zhao, Ping.,Zhang, Qin.,Du, Rongni.,...&Li, Lin.(2007).Shear-induced epitaxial crystallization in injection-molded bars of high-density polyethylene/isotactic polypropylene blends.POLYMER,48(15),4529-4536. |
| MLA | Su, Run,et al."Shear-induced epitaxial crystallization in injection-molded bars of high-density polyethylene/isotactic polypropylene blends".POLYMER 48.15(2007):4529-4536. |
入库方式： OAI收割
来源：化学研究所
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