郭敏,王立诚,Robert B.Grubbs,蔡正国
GUO Min,WANG Li-cheng,Robert B.Grubbs,CAI Zheng-guo

• 1:东华大学材料科学与工程学院纤维材料改性国家重点实验室

摘要(Abstract)：

选用芴基胺基二甲基钛配合物1b{[t-BuNSiMe_2(2,7-t-Bu_2Flu)]TiMe_2}和2{[(1-Adamantyl)NSiMe_2(2,7-t-Bu_2Flu)]TiMe_2},在改性甲基铝氧烷(MMAO)和2,6-二叔丁基-4-甲基苯酚(BHT)的活化下,催化乙烯的均聚反应。结果表明:胺基上的取代基金刚烷相比于叔丁基,可以提高聚合活性并有利于高相对分子质量聚乙烯的合成;延长反应时间可提高聚合物的产量及相对分子质量,但过长的反应时间会使聚合体系出现团聚现象,降低聚合活性。
The results of ethylene polymerization with fluorineaminodimethyltitanium complexes lb{[tBuNSiMe_2(2,7-t-Bu_2Flu)]TiMe_2} and 2{[(1-Adamantyl)NSiMe_2(2,7-t-Bu_2Flu)]TiMe_2} activated by modified methylaluminoxane(MMAO) and 4-Me-2,6-isopropyl-phenol(BHT) indicated that compared with t-Bu substituents,the introduction of adamanthy group on the amido ligand improved the activity and produced higher molecular weight polyethylene.The yield and the molecular weight of polymer were increased according to the increase of polymerization time,but the agglomeration was observed to reduce polymerization activity.

关键词(KeyWords)： 均相催化剂;芴基胺基二甲基钛配合物;乙烯聚合
homogeneous catalyst;fluoreneaminodimethyltitanium complexe;ethylene polymerization

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金面上项目(21174026);; 新世纪优秀人才支持计划资助;; 上海高校特聘教授(东方学者)岗位计划资助;; 上海市教育发展基金会“曙光计划”;; 中央高校基本科研业务费专项资金资助

作者(Author): 郭敏,王立诚,Robert B.Grubbs,蔡正国
GUO Min,WANG Li-cheng,Robert B.Grubbs,CAI Zheng-guo

DOI: 10.16090/j.cnki.hcxw.2016.06.001

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