钯催化剂催化乙烯及降冰片烯聚合研究.pdf

摘要中山大学硕士毕业论文钯催化剂催化乙烯及降冰片烯聚合研究专业:高分子化学与物理学位申请人:孟磊指导老师:张玲(讲师) (ArN==NAr)PdMeCI(Ar=2,6. 二异丙基苯基),研究了乙烯聚合,乙烯和极性单体丙烯酸2.() 乙基酯(BIEA)共聚。研究了不同乙烯聚合压力(、latm、5atm、30arm) 对聚合物拓扑结构的影响,对聚合物进行核磁和凝胶色谱测试。在常压(1atm), 聚合温度Tp=35"C进行乙烯和极性单体共聚,得到了乙烯和极性单体共聚物, 对共聚物进行核磁和凝胶色谱测试。研究了PdCI加/IAO催化体系得到的聚降冰片烯,对聚合物进行碳谱,红外光谱,热重测试,与NiBr2/MAO催化体系得到的聚降冰片烯进行了光谱的比较, 两种聚合物的结构不同;与Pd配合物/MAO催化体系得到的聚降冰片烯比较, 氯化钯催化所得聚合物的碳碳骨架结构与钯配合物所得一致,非离子钯/MAO催化体系在聚合反应中有相同的活性中心和反应机理。。研究了三种路易斯酸(AlEt2Cl,MAO,NiBr2),其活性顺序为:AIEt2CI>MAO>NiBr2。对产物进行了气相色谱质谱连用()和碳谱测试。关键词:,乙烯,极性单体,共聚,, 降冰片烯摘要中山大学硕士毕业论文 Polymerization ofEthylene and Norbonene Catalyzed by Palladium(II) Catalyst Major:Polymer Chemistry&Physics MasterCandidate:Meng Lei Supervisor:Doctor Zhang Ling ABSTRACT Cationic a—diiminepalladium(plex(ArN=CMe—CMe=NAr)PdMeCI(Ar =2,6-dimethylphenyl,)and polar monomer 2-(2一bromoisobutyryloxy)ethyl acrylate (BIEA)have been -copolymerization of ethylene has been ofethylene pressure on polymer topology Was investigated. The polymers were analyzed by HNMR,13C NMR of ethylene and polar monomer Wasinvestigated,under standard atmosphere,Tp=3 5。C, copolymer PE·BIEA copolymer Wasanalyzed by IHNMR,13C NMR and GPC. Polynorbonene(PNBE)gained byPdCl2/MAO systems Was polymer Wasanalyzed by MR,FTIR,and TG paring thespectra with PNBE gained byNiBr2/MAO systems,structures of two kinds of PNBE were the spectra with PNBE gained by Pd..plexes systems,the carbon-carbon bond—forming mode ofproducts were confirmed tobe identical,suggesting thepresence ofthesame activespecies and thesame mechanism fortheproduct formation inallthesenonionic catalyst/MAO systems. Influences ofthreedifferent kinds ofLewis acid(AIEtzCI,MAO,NiBr2)on 摘要中山大学硕士毕业论文 Friedel-Crafts alkylation reaction were activity order AIEhCI>MAO> products were analy