| Probing into the pristine basic morphology of high impact polypropylene particles | |
| Zhou, Yong1,2; Niu, Hui1; Kong, Lei1,2; Zhao, Ying1; Dong, Jin-Yong1; Wang, Dujin1 | |
| 刊名 | Polymer
 |
| 2009-09-10 | |
| 卷号 | 50期号:19页码:4690-4695 |
| 关键词 | High impact polypropylene Morphological observation Pristine basic structure |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2009.07.042 |
| 通讯作者 | Dong, jin-yong(jydong@iccas.ac.cn) |
| 英文摘要 | In this paper, the pristine basic morphology of high impact polypropylene (hipp) particles prepared with an industrial mgcl(2)/ticl(4) ziegler-natta catalyst undergoing sequentially occurred propylene (p) homopolymerization and ethylene (e)/propylene copolymerization has been probed mainly using transmission electron microscopy (tem) techniques including plain tem and the advanced transmission electron microtomography (temt). it is revealed that the basic structure units comprising a whole hipp particle are the submicron pp (polypropylene) globule and nano-sized ep (ethylene-co-propylene) droplet. ep rubber (epr) domain is formed by the agglomeration of ep droplets. continually formed ep droplets turn to fill, from inside out, the micro- and macro-pores inside the preformed pp skeleton, affording different-sized epr domains. taking the two basic structure units into account, new quaternary structure model describing the manifold structures of hipp particles has been proposed. from these findings, it is suggested that, to gain hipp polymers with excellent stiffness/toughness-balanced properties, it is crucial to control the first-staged propylene homopolymerization alongside a rational design of the catalyst architecture to accomplish desired epr dispersion morphologies that dictate hipp properties. (c) 2009 elsevier ltd. all rights reserved. |
| WOS关键词 | REACTOR GRANULE TECHNOLOGY ; ZIEGLER-NATTA POLYMERIZATION ; CATALYST PARTICLES ; GROWTH ; MECHANISM ; ALLOYS ; BLENDS |
| WOS研究方向 | Polymer Science |
| WOS类目 | Polymer Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000272959200034 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2395236 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Dong, Jin-Yong |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Yong,Niu, Hui,Kong, Lei,et al. Probing into the pristine basic morphology of high impact polypropylene particles[J]. Polymer,2009,50(19):4690-4695. |
| APA | Zhou, Yong,Niu, Hui,Kong, Lei,Zhao, Ying,Dong, Jin-Yong,&Wang, Dujin.(2009).Probing into the pristine basic morphology of high impact polypropylene particles.Polymer,50(19),4690-4695. |
| MLA | Zhou, Yong,et al."Probing into the pristine basic morphology of high impact polypropylene particles".Polymer 50.19(2009):4690-4695. |
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