文章摘要
聚硅烷类嵌段共聚物的聚合反应动力学及相分离机理
Polymerization Kinetics and Phase Separation for Polysilane Block Copolymers
  
DOI:10.16865/j.cnki.1000-7555.2018.06.004
中文关键词: 聚硅烷嵌段共聚物  聚合反应动力学  相分离  速率常数
英文关键词: polysilane block copolymer  polymerization kinetics  phase separation  rate constants
基金项目:江苏省自然科学基金资助项目(BK20130420);淮阴工学院校级基金(HGB1203)
作者单位
何 磊1,2,3, 黄秋月1, 朱秀芳1,2, 洪 坤1,2, 云 山1,2, 张加栋1,2 1. 淮阴工学院 化学工程学院江苏 淮安 223003 2. 江苏省盐化工新材料工程实验室江苏 淮安 2230033. 淮安万邦香料工业有限公司江苏 淮安 223300 
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中文摘要:
      以聚甲基苯基硅烷为引发剂,在紫外光照下与乙烯基单体聚合形成聚硅烷类嵌段共聚物。基于聚合反应动力学模型,就单体、紫外光强、质量比对反应动力学参数以及嵌段长度的影响进行解析。进一步结合相分离观察的结果,分析了此类共聚物中发生相分离与否的影响因素。结果表明,光聚合后仅1000 s后碳嵌段平均长度就收拢于5~6个碳原子,硅元素嵌段平均长度也降低到2左右,表明此类材料未发生相分离,是适用于光波导领域的理想材料。
英文摘要:
      Polysilane based block copolymers were prepared by photopolymerization using poly(methylphenylsilane) (PMPS) as photo-radical initiator. Effects of monomer type, UV intensity and PMPS/monomers mass ratio on polymerization kinetics parameters and block length were evaluated by the self-build kinetic modeling. These results were analyzed together with the phase separation observations. Since the average number of carbon atoms per structural block decreases to 5~6 and the average number of silicon atoms per structural block decreases to about 2 after 1000 s of polymerization, no phase separation occurs. The results indicate that they are potential materials for optical waveguide applications.
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