Thermal and crystallization behaviors of polyethylene blends synthesized by binary late transition metal catalysts combinations
文献类型：期刊论文
| 作者 | Pan, L.; Zhang, Kun Y.; Li, Yan G.; Bo, Shu Q.; Li, Yue S. |
| 刊名 | JOURNAL OF APPLIED POLYMER SCIENCE
 |
| 出版日期 | 2007-06-15 |
| 卷号 | 104期号:6页码:4188-4198 |
| ISSN号 | 0021-8995 |
| 关键词 | Blends Crystallization Polyethylene Synthesis |
| DOI | 10.1002/app.25960 |
| 英文摘要 | A series of reactor blends of linear and branched polyethylenes have been prepared, in the presence of modified methylaluminoxane, using a combination of 2,6-bis[1(2,6-dimethyphenylimino) pyridyl]-cobalt(II) dichloride (1), known as an active catalyst for producing linear polyethylene, and [1,4-bis(2,6-diidopropylphenyl)] acenaphthene diimine nickel(II) dibromide (2), which is active for the production of branched polyethylene. The polymerizations were performed at various levels of catalyst feed ratio at 10 bar. The linear correlation between catalyst activity and concentration of catalyst 2 suggested that the catalysts performed independently from each other. The weight-average molecular weights ((M) over bar (w)), crystalline structures, and phase structures of the blends were investigated, using a combination of gel permeation chromatography, differential scanning calorimetry, wide-angle X-ray diffraction, and small angle X-ray scattering techniques. It was found that the polymerization activities and MWs and crystallization rate of the polymers took decreasing tendency with the increase of the catalyst 2 ratios, while melting temperatures (T-m), crystalline temperatures (T,), and crystalline degrees took decreasing tendency. Long period was distinctly influenced by the amorphous component concentration. (c) 2007 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| 出版者 | JOHN WILEY & SONS INC |
| WOS记录号 | WOS:000246128400091 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62375]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Yue S. |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan, L.,Zhang, Kun Y.,Li, Yan G.,et al. Thermal and crystallization behaviors of polyethylene blends synthesized by binary late transition metal catalysts combinations[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2007,104(6):4188-4198. |
| APA | Pan, L.,Zhang, Kun Y.,Li, Yan G.,Bo, Shu Q.,&Li, Yue S..(2007).Thermal and crystallization behaviors of polyethylene blends synthesized by binary late transition metal catalysts combinations.JOURNAL OF APPLIED POLYMER SCIENCE,104(6),4188-4198. |
| MLA | Pan, L.,et al."Thermal and crystallization behaviors of polyethylene blends synthesized by binary late transition metal catalysts combinations".JOURNAL OF APPLIED POLYMER SCIENCE 104.6(2007):4188-4198. |
入库方式： OAI收割
来源：化学研究所
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