• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >One step synthesis and rapid ring-opening polymerization of macrocyclic (arylene thioether ketone) oligomers
【24h】

One step synthesis and rapid ring-opening polymerization of macrocyclic (arylene thioether ketone) oligomers

机译：大环（亚芳基硫醚酮）低聚物的一步合成和快速开环聚合

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

Well-crystal macrocyclic (arylene thioether ketone) oligomers were synthesized under high dilution condition by the reaction of Na2S with bis(4-fluoro-phenyl)methanone in 1-methyl-pyrrolidone (NMP). The oligomers were fully characterized by Matrix-assisted laser desorption/ionization time-of-flight mass spectra (MALDI-TOF-MS), high-pressure liquid chromatography (HPLC), gel permeation chromatography (GPC), H-1 NMR, C-13-NMR, and differential scanning calorimetry (DSC). According to DSC studies, uncatalyzed and rapid ring-opening polymerization (ROP) of the oligomers took place instantly when they were heated to melting point. Extracted by dichloro-methane, the obtained polymer neither loses any weight nor dissolves in boiling 1-chloro- naphthalene. These facts indicated that there are no residual oligomers within the resultant polymer. The as-prepared oligomers could be potentially used as high-temperature hot-melt adhesive at a high temperature > 350 degrees C, and matrices for high-performance composites and nanocomposites. (c) 2006 Wiley Periodicals, Inc.
机译：通过Na 2 S与双（4-氟-苯基）甲酮在1-甲基吡咯烷酮（NMP）中的反应，在高稀释条件下合成了晶体良好的大环（亚芳基硫醚酮）低聚物。通过基质辅助激光解吸/电离飞行时间质谱（MALDI-TOF-MS），高压液相色谱（HPLC），凝胶渗透色谱（GPC），H-1 NMR，C充分表征了这些低聚物-13-NMR和差示扫描量热法（DSC）。根据DSC研究，低聚物在加热到熔点时会立即发生未催化的快速开环聚合（ROP）。用二氯甲烷萃取，所得聚合物既不失重也不溶于沸腾的1-氯萘。这些事实表明，所得聚合物中没有残留的低聚物。所制备的低聚物可潜在地用作> 350摄氏度高温下的高温热熔胶粘剂，以及用作高性能复合材料和纳米复合材料的基质。 （c）2006年Wiley Periodicals，Inc.

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