• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Preparation and characterization of fully renewable polybenzoxazines from monomers containing multi-oxazine rings
【24h】

Preparation and characterization of fully renewable polybenzoxazines from monomers containing multi-oxazine rings

机译：由含多恶嗪环的单体制备可完全再生的聚苯并恶嗪

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

Two fully renewable benzoxazine monomers containing multi-oxazine rings were synthesized and used to prepare polybenzoxazines. The structures of the monomers, prepared from renewable feedstock (vanillin, guaiacol, octadecylamine and furfurylamine) were supported by FT-IR and NMR spectral analyses. The melting points and curing temperatures were characterized through DSC. Thermal initiated ring-opening polymerization of the monomers was monitored by FT-IR. The solubility of the polybenzoxazines was examined and cross-linking differences between polymers prepared from monomers with mono-oxazine and multi-oxazine rings were clarified. Through energy calculations, substitution was found to preferably take place at the furan ring. The thermal properties were investigated through TGA, which showed good thermal stability (T-d5% at 284 degrees C and 335 degrees C) and high char yield (up to 59.6%). The mechanical properties were characterized through DMA, which revealed a glass transition temperature at 155 degrees C. Due to structure speciality, the polybenzoxazines also showed pH responsiveness and can reversibly change color under different conditions.
机译：合成了两个含有多恶嗪环的完全可再生的苯并恶嗪单体，并用于制备聚苯并恶嗪。由可再生原料（香兰素，愈创木酚，十八烷基胺和糠胺）制备的单体结构通过FT-IR和NMR光谱分析得到支持。通过DSC表征熔点和固化温度。通过FT-IR监测单体的热引发的开环聚合。检查了聚苯并恶嗪的溶解度，并弄清了由具有单恶嗪和多恶嗪环的单体制备的聚合物之间的交联差异。通过能量计算，发现取代优选发生在呋喃环上。通过TGA研究热性能，其显示出良好的热稳定性（在284℃和335℃下为T-d5％）和高的炭产率（高达59.6％）。通过DMA表征了机械性能，其显示出155℃的玻璃化转变温度。由于结构的特殊性，聚苯并恶嗪还显示出pH响应性并且可以在不同条件下可逆地改变颜色。

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