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首页> 外文期刊>Polymer science, Series C >Cross-Metathesis between Polynorbornene and Poly(5,6-epoxy-1-octenamer)
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Cross-Metathesis between Polynorbornene and Poly(5,6-epoxy-1-octenamer)

机译：多冰片烯和聚（5,6-环氧-1-辛膜蛋白）之间的交叉复分解

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摘要

The macromolecular reaction of interchain cross-metathesis between polynorbornene and poly(5,6-epoxy-1-octenamer) in the presence of the first-generation Grubbs catalyst is studied. Chemically stable poly(5,6-epoxy-1-octenamer) is obtained through metathesis polymerization of 5,6-epoxycyclooct-1-ene with the second-generation Grubbs ruthenium catalyst. New random multiblock copolymers of norbornene and 5,6-epoxycyclooct-1-ene with different average block lengths determined by the reaction time, solvent type, and concentrations of the catalyst and initial homopolymers are synthesized and characterized by NMR, GPC, and DSC. Despite a distance between the epoxy substituent and the reaction center (double bond), poly(5,6-epoxy-1-octenamer) shows a lower activity in the cross-metathesis reaction with polynorbornene compared to unsubstituted polyoctenamer. The influence of epoxy groups present in the backbones of homopolymer and norbornene-cyclooctene multiblock copolymers on their thermal characteristics is studied. It is shown that the glass transition and melting temperatures increase with the concentration of epoxy groups upon the incorporation of an oxirane fragment into both homopolymers and copolymers. The crystallinity of poly(5,6-epoxy-1-octenamer) increases with the content of trans-C=C bonds in the polymer.
机译：研究了在第一代GRUBBS催化剂存在下，在多冰片烯和聚（5,6-环氧-1-辛膜蛋白）之间的间歇交叉复分解的大分子反应。通过使用第二代GRUBBS钌催化剂的5,6-环氧胞胞外环式-1-烯来获得化学稳定的聚（5,6-环氧-1-辛蛋白）。使用反应时间，溶剂型和催化剂浓度和初始均聚物的浓度确定的降冰片烯和5,6-环氧胞菌环胶蛋白-1-烯的新的无随机多嵌段共聚物，并以NMR，GPC和DSC为特征。尽管环氧取代基和反应中心（双键）之间存在距离，但与未取代的聚胞聚蛋白相比，聚（5,6-环氧-1-辛烯醇）显示出与多鸡烯的交叉复分解反应的较低活性。研究了均聚物和降冰片烯 - 环偶多嵌段多嵌段骨架骨干中存在的环氧基团对其热特性的影响。结果表明，在将环氧树脂掺入均聚物和共聚物中时，玻璃化转变和熔化温度随着环氧基团的浓度而增加。聚（5,6-环氧-1-辛蛋白酶）的结晶度随聚合物中的反式C = C键的含量增加。

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  • 来源
    《Polymer science, Series C》 |2019年第1期|共11页
  • 作者

    Roenko A. V.; Denisova Yu. I.; Gringolts M. L.; Peregudov A. S.; Shandryuk G. A.; Finkelshtein E. Sh.; Kudryavtsev Y. V.;

  • 作者单位

    Russian Acad Sci Topchiev Inst Petrochem Synth Moscow 119991 Russia;

    Russian Acad Sci Topchiev Inst Petrochem Synth Moscow 119991 Russia;

    Russian Acad Sci Topchiev Inst Petrochem Synth Moscow 119991 Russia;

    Russian Acad Sci Nesmeyanov Inst Organoelement Cpds Moscow 119991 Russia;

    Russian Acad Sci Topchiev Inst Petrochem Synth Moscow 119991 Russia;

    Russian Acad Sci Topchiev Inst Petrochem Synth Moscow 119991 Russia;

    Russian Acad Sci Topchiev Inst Petrochem Synth Moscow 119991 Russia;

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  • 正文语种 eng
  • 中图分类 有机化学;
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