Rheological studies on the quasi-quiescent crystallization of polypropylene nanocomposites
文献类型：期刊论文
| 作者 | Sun, Tongchen1,2; Chen, Fenghua1,2; Dong, Xia1; Han, Charles C.1 |
| 刊名 | POLYMER
 |
| 出版日期 | 2008-05-27 |
| 卷号 | 49期号:11页码:2717-2727 |
| 关键词 | Polypropylene Nanocomposite Rheology Isothermal Crystallization |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2008.04.021 |
| 英文摘要 | Isothermal crystallization of isotactic polypropylene (iPP)/organic montmorillonite (OMMT) binary nanocomposite and iPP/OMMT/poly(etliylene-co-octene) (PEOc) ternary nanocomposites has been investigated by polarized optical microscopy (POM), rheometry and scanning electron microscopy (SEM). At the stage of nucleation the heterogeneous, nucleation effect of OMMT was much greater than the concentration fluctuation assisted nucleation effect in the ternary nanocomposite. Besides, PEOc played a role of inhibitor of OMMT nucleation agents at the nucleation stage because many of OMMT layers were distributed around PEOc-rich domains. At stage II of the crystal growth process, the entanglement effect of PEOc greatly affected the theological response (storage modulus (G') and its growth rate) due to the long side chains of PEOc component. In stage III of the growth process, OMMT layers and the entanglement of PEOc chains limited the motion of polypropylene chains. So the growth rate of G' was slowed down. During the shrinkage and cooling process after isothermal crystallization, some fibril links between the spherulites, consisting of PEOc chains and iPP chains, were formed from the amorphous phases surrounding the spherulites. (c) 2008 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000256695600014 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/64923]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Han, Charles C. |
| 作者单位 | 1.CAS, Inst Chem, State Key Lab Polymer Phys & Chem, Joint Lab Polymer Sci & Mat,Beijing Natl Lab Mol, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Tongchen,Chen, Fenghua,Dong, Xia,et al. Rheological studies on the quasi-quiescent crystallization of polypropylene nanocomposites[J]. POLYMER,2008,49(11):2717-2727. |
| APA | Sun, Tongchen,Chen, Fenghua,Dong, Xia,&Han, Charles C..(2008).Rheological studies on the quasi-quiescent crystallization of polypropylene nanocomposites.POLYMER,49(11),2717-2727. |
| MLA | Sun, Tongchen,et al."Rheological studies on the quasi-quiescent crystallization of polypropylene nanocomposites".POLYMER 49.11(2008):2717-2727. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。