Preparation of LLDPE by in situ copolymerization of ethylene with polymerization catalyst supported on montmorillonite
文献类型：期刊论文
| 作者 | Zhang, ZC; Wang, RY; Ke, YC; Zheng, YS; Guo, CY; Cui, NN; Hu, YL |
| 刊名 | ACTA POLYMERICA SINICA
 |
| 出版日期 | 2004-10-01 |
| 期号 | 5页码:713-718 |
| 关键词 | In Situ Copolymerization Branched Polyethylene Montmorillonite |
| ISSN号 | 1000-3304 |
| 英文摘要 | Linear low-density polyethylene (LLDPE) has been prepared by in situ copolymerization of ethylene with a dual functional catalyst, which was composed of rac-Et (Ind)(2)ZrCl2 supported on montmorillonite (MMT) and {[(2-ArN = C(Me))(2)C5H3N] FeCl2} (Ar = 2,4-C6H4 (Me)(2)) oligomerization catalyst. A series of LLDPE with different branching degrees were obtained by adjusting the molar ratio of Fe and Zr ( Fe/Zr), the molar ratio of Al and (Fe + Zr) (Al/( Fe + Zr)) as well. The kinetics curves of polymerization show that the two catalysts exhibit respective catalytic characterizations, and the activity of copolymerization catalyst is more smoothly after supported on MMT. As increasing the Fe/Zr ratio,the densities of polymers measured by density gradient method and the melting points of polymers obtained from DSC decrease. C-13-NMR shows that the polymers are LLDPE, and their branching degrees increase as the increasing of the Fe/Zr ratio. At the same time, there are some unreacted alpha-olefins in polymers, which were confirmed by C-13-NMR and GPC. The SEM shows that the polymerization catalyst supported on MMT may produce LLDPE with better morphology than that produced by the catalyst in homogeneous. |
| 语种 | 英语 |
| WOS记录号 | WOS:000224710100018 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/81891]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, ZC |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, Key Lab Engn Plast, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Xian Jiaotong Univ, Inst Polymer, Environm & Chem Engn Sch, Xian 710049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, ZC,Wang, RY,Ke, YC,et al. Preparation of LLDPE by in situ copolymerization of ethylene with polymerization catalyst supported on montmorillonite[J]. ACTA POLYMERICA SINICA,2004(5):713-718. |
| APA | Zhang, ZC.,Wang, RY.,Ke, YC.,Zheng, YS.,Guo, CY.,...&Hu, YL.(2004).Preparation of LLDPE by in situ copolymerization of ethylene with polymerization catalyst supported on montmorillonite.ACTA POLYMERICA SINICA(5),713-718. |
| MLA | Zhang, ZC,et al."Preparation of LLDPE by in situ copolymerization of ethylene with polymerization catalyst supported on montmorillonite".ACTA POLYMERICA SINICA .5(2004):713-718. |
入库方式： OAI收割
来源：化学研究所
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