Controllable Coordination Polymerizations for Synthetic Rubber
浏览次数:1310    发布时间:2014/3/10
张学全 研究员
中国科学院长春应用化学研究所,中国
报告题目:Controllable Coordination Polymerizations for Synthetic Rubber
  

Abstract:
    Living polymerization has attracted widespread attentions due to its feasibility to offer the polymers with controlled molecular weight and narrow molecular weight distribution, well-defined block copolymers as well as terminally functionalized materials. Living anionic systems also have been well developed for various monomers, particularly for polymerization of conjugated dienes, due to their strong background of practical applications. Living radical polymerization has been gained such tremendous momentum since Matyjaszewski and Sawamoto first reported two different catalyst systems independently in 1995. However, such systems can neither be extended for olefin and dienes, nor synthesize polymers having strereospecific comformation.
    Conventional Ziegler-Natta catalysts have been claimed to be the powerful tools for promoting regio- and/or stereospecific polymerization of 1,3-butadiene at high levels, whereas the molecular weight distribution of polymer is fairly broad mostly because of multiple active sites, slow initiation and chain transfer reaction.
    In this paper, we have explored coordination catalytic systems having natures of single active sites, weakened chain transfer reaction or reversible chain transfer reactions for synthesizing polybutadienes with narrow molecular weight, polybutadiene block polymer containing different stereospecific chain segments and block copolymers of polybutadiene with polar polymers.
 

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个人简介:

  张学全,男,1962年12月生,研究员,博士研究生导师、所学术委员会委员。中国科学院长春应用化学研究所高性能合成橡胶工程技术中心主任,1999年韩国三星综合化学技术开发奖;2000年韩国三星综合化学“化学鹰”奖,中国科学院自然科学二等奖,2003年通用汽车-国家基金委中国科技成就奖二等奖,国务院特殊政府津贴,2005年长春市特殊政府津贴,吉林省第八批有突出贡献的中青年专业技术人才,2012年吉林省第三批拔尖创新人才。近五年来承担“国家“863”项目二项,国家“十五”攻关项目二项,国家自然科学基金项目一项,国家科技部“973”子课题一项,中国科学院方向性项目二项(首席,副首席各一项),国家科技支撑项目一项(首席)和多项中国石油和企业横向项目;发表国内外期刊论文百余篇,申请和获权国内国际发明专利100余项。