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| 铁系亚胺基吡啶复配催化乙烯原位共聚产物的表征 | |
| 引用本文： | 李贺新,石金永,闫卫东,胡友良.铁系亚胺基吡啶复配催化乙烯原位共聚产物的表征[J].高分子学报,2004(6):913-916. |
| 作者姓名： | 李贺新 石金永 闫卫东 胡友良 |
| 作者单位： | 1. 河北工业大学化工学院,高分子科学与工程研究所,天津,300130 2. 河北工业大学化工学院,高分子科学与工程研究所,天津,300130;中国科学院化学研究所分子科学中心,工程塑料国家重点实验室,北京,100080 3. 中国科学院化学研究所分子科学中心,工程塑料国家重点实验室,北京,100080 |
| 基金项目： | 国家自然科学基金 (基金号 5 0 2 73 0 0 9)，工程塑料国家重点实验室开放基金 (基金号SKLEP0 0 62 )，天津市自然科学基金重点项目 (基金号 0 2 3 80 2 2 11)，河北省自然科学基金 (基金号 2 0 2 0 0 8)，河北省博士基金资助项目 |
| 摘 要： | Branched polyethylene from ethylene as single monomer was prepared by the tandem catalyst system of {2-2-Me C6 H4 N=Me)]2 C5H3N} FeCl2 (1) and {2,6-1-(2,6-Me2-4-Br-C6H4N=(Me)]2C5H3N} FeCl2 (2) activated with methylaluminoxane (MAO) . The products of polymerization were characterized by DSC, GPC and ^13C-NMR. The results revealed that the copolymer produced by in situ copolymerization of ethylene was a mixture of branched polyethylene and α-olefin. The content of α-olefin in the mixture was increased with increasing the molar ratio of catalysts 1/2. The MWD paramelers of polyethylene and copolymer were 28.6 and 7.9, respectively. ^13C-NMR spectra showed that there were ethyl groups, butyl groups and long chain alkyl groups in the copolymer. The average degree of branching of such branched polyethylene was less than 5C/1000C. |
| 关 键 词： | 支化聚乙烯 表征 原位共聚 铁系亚胺基吡啶聚合物 |
| 修稿时间： | 2004年4月14日 |
CHARACTERIZATION OF BRANCHED POLYETHYLENE PREPARED BY in situ COPOLYMERIZATION OF ETHYLENE WITH IRON (Ⅱ)(IMINO) PYRIDINES COMPLEXES |
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| LI Hexin\,SHI Jinyong\,YAN Weidong\\{,\},HU Youliang\.CHARACTERIZATION OF BRANCHED POLYETHYLENE PREPARED BY in situ COPOLYMERIZATION OF ETHYLENE WITH IRON (Ⅱ)(IMINO) PYRIDINES COMPLEXES[J].Acta Polymerica Sinica,2004(6):913-916. | |
| Authors: | LI Hexin\ SHI Jinyong\ YAN Weidong\\{ \} HU Youliang\ |
| Institution: | LI Hexin\+1,SHI Jinyong\+1,YAN Weidong\+\{1,2\},HU Youliang\+2 |
| Abstract: | Branched polyethylene from ethylene as single monomer was prepared by the tandem catalyst system of {2-2-Me C_6H_4 N(Me)]_2C_5H_3N}FeCl_2(1) and {2,6-1-(2,6-Me_2-4-Br-C_6H_4N(Me)]_2C_5H_3N} FeCl_2(2) activated with methylaluminoxane (MAO) .The products of polymerization were characterized by DSC,GPC and ()~(13)C-NMR.The results revealed that the copolymer produced by in situ copolymerization of ethylene was a mixture of branched polyethylene and α-olefin.The content of α-olefin in the mixture was increased with increasing the molar ratio of catalysts 1/2.The MWD paramelers of polyethylene and copolymer were 28\^6 and 7\^9, respectively.()~(13)C-NMR spectra showed that there were ethyl groups,butyl groups and long chain alkyl groups in the copolymer.The average degree of branching of such branched polyethylene was less than 5C/1000C. |
| Keywords: | Branched polyethylene Characterization “in situ" Copolymerization Iminopyridyl iron complexes |
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