【摘要】 合成了不同1、2-含量聚丁二烯及其硅氢加成产物,对聚丁二烯不饱和主链双键及乙烯基（外双键）的硅氢加成反应活性研究表明乙烯基的硅氢加成活性远高于主链双键。含氢硅烷的极性、反应介质的碱性都有利于硅氢加成反应的进行。硅氢加成产物的抗张强度较加成前提高,伸长率下降。在1、2-含量达到40%左右时成膜后膜对氧气透过率（Po₂）最大,选择分离系数(α+（N₂）^O₂)最低。聚丁二烯三烷基硅氢加成产物成膜后膜对氧气的透过率均有较大改善,选择分离系数变化不大。更多还原

【Abstract】 A series of polybutadienes with different 1、2-content were synthesized and the hydrosilylation addition to vinyl side group and to main chain double bond was studied using H₂PtCl₆ as catalyst.Mechanical properties of cast films in tensile strength and elongation from polybutadienes and their hydrosilylation products were observed.Oxygen and nitrogen permeability for polybutadines with different 1、2-content and their hydrosilyaltion products were measured.更多还原