ICCAS OpenIR
Reactor blending of polyethylene with ethyl-bridged zirconocene catalyst and iron-based diimine complex
Guo, CY; Ma, Z; Zhang, MG; Ke, YC; Hu, YL
2003-11-07
Source PublicationJOURNAL OF APPLIED POLYMER SCIENCE
ISSN0021-8995
Volume90Issue:6Pages:1515-1518
AbstractBlends of polyethylene (PE) were produced in a single reactor using a combination of {[(2-ArN=C(Me))(2)C5H3N]FeCl2} [Ar=2,6-2CH(3)(C6H4] and rac-Et(Ind)(2)ZrCl2. The experimental results showed that the PEs obtained have a broad molecular weight distribution (MWD) and both the molecular weight and the MWD can be regulated through changing the mole ratio of the two active sites. In addition, the polymerization activities decreased with the increase of the Fe/Zr mole ratio whereas the crystallinity of the PE obtained exhibited a contrary trend, decreasing as the Fe/Zr mole ratio went up. The morphology of the blends also directly relates to the Fe/Zr mole ratio, and more iron content in the bimetallic catalysts system gives rise to compact PEs of high crystallinity. This reflects that the reactor blends are morphology controllable as well and can be easily applied to present processing techniques because of adjustable molecular weights and their distribution. Differential scanning calorimetry, thermogravimetric analysis, gel permeation chromatography, and scanning electron microscopy were employed to characterize the properties of the reactor blends of PEs. (C) 2003 Wiley Periodicals, Inc.
KeywordBlending Polyethylene Metallocene Catalysts Transition Metal Chemistry
DOI10.1002/app.12682
Indexed BySCI
Language英语
WOS IDWOS:000185522000009
PublisherJOHN WILEY & SONS INC
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/80520
Collection中国科学院化学研究所
Corresponding AuthorHu, YL
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Guo, CY,Ma, Z,Zhang, MG,et al. Reactor blending of polyethylene with ethyl-bridged zirconocene catalyst and iron-based diimine complex[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2003,90(6):1515-1518.
APA Guo, CY,Ma, Z,Zhang, MG,Ke, YC,&Hu, YL.(2003).Reactor blending of polyethylene with ethyl-bridged zirconocene catalyst and iron-based diimine complex.JOURNAL OF APPLIED POLYMER SCIENCE,90(6),1515-1518.
MLA Guo, CY,et al."Reactor blending of polyethylene with ethyl-bridged zirconocene catalyst and iron-based diimine complex".JOURNAL OF APPLIED POLYMER SCIENCE 90.6(2003):1515-1518.
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