• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Polymer Science, Part A. Polymer Chemistry >Synthesis of Cyclic Olefin Polymers with High Glass Transition Temperature by Ring-Opening Metathesis Copolymerization and Subsequent Hydrogenation
【24h】

Synthesis of Cyclic Olefin Polymers with High Glass Transition Temperature by Ring-Opening Metathesis Copolymerization and Subsequent Hydrogenation

机译：开环复分解共聚合和随后的加氢合成具有高玻璃化转变温度的环状烯烃聚合物

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Novel cyclic olefin polymers (COPs) derived from bulky cyclic olefin, exo-1,4,4a,9,9a,10-hexahydro-9,10(10,20)-benzeno- l,4-methanoanthracene (HBMN), with high glass transition temperature (T_g), excellent thermal stability, high transparency, and improved mechanical performance, have been achieved by ring-opening metathesis polymerization and subsequent hydrogenation. The "first-generation Grubbs" catalyst, RuCl_2(PCy_3) _2(CHPh) (Cy = cyclohexyl) (G1), displays very high activity for homo/copolymerization with complete conversion. Homopolymer of the HBMN after complete hydrogenation showed a highest T_g of 223.6°C. Copolymerization of HBMN with tricyclo[4.3.0.12,5]deca-3-ene or 5-n-hexylnorbornene was also carried out. These two series of COPs were characterized by gel permeation chromatography, nuclear magnetic resonance, differential scanning calorimetry, and thermogravimetric analysis. The T_g of the resulted COPs linearly increased with HBMN content, which is easily controlled by changing feed ratios. The tensile test indicates that these copolymers have good mechanical performance as all these copolymers show a higher strain at break compared with commercial products (TOPASVR~?).
机译：衍生自大环烯烃exo-1,4,4a，9,9a，10-六氢-9,10（10,20）-苯并-1,4-甲基蒽（HBMN）的新型环烯烃聚合物（COP）通过开环易位聚合和随后的氢化，已经实现了高玻璃化转变温度（T_g），优异的热稳定性，高透明度和改善的机械性能。 “第一代Grubbs”催化剂RuCl_2（PCy_3）_2（CHPh）（Cy =环己基）（G1）具有很高的均相/共聚合活性，并具有完全转化率。完全氢化后，HBMN的均聚物显示最高T_g为223.6°C。还进行了HBMN与三环[4.3.0.12,5]十-3-烯或5-正己基降冰片烯的共聚。通过凝胶渗透色谱，核磁共振，差示扫描量热法和热重分析对这两个系列的COP进行了表征。所得COP的T_g随着HBMN含量的增加而线性增加，这很容易通过改变进料比来控制。拉伸试验表明这些共聚物具有良好的机械性能，因为所有这些共聚物均显示出比市售产品（TOPASVR-β）更高的断裂应变。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号