• 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 >Grafting of oxazoline functional group to polycaprolactone
【24h】

Grafting of oxazoline functional group to polycaprolactone

机译：恶唑啉官能团接枝聚己内酯

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

A twin-screw extruder was used to graft oxazoline reactive group onto polycaprolactone (PCL) by free radical initiation reaction. A low-volatility oxazoline compound was used to facilitate a high-temperature grafting reaction. The effect of melt temperature, screw speed, and initiator and monomer concentrations on graft content were evaluated. The graft content ranged from 0.7 to 2.6%. Increased melt temperature and reduced screw speed increased the graft content. Molecular weight and molecular weight distribution evaluated with the help of intrinsic viscosity and gel permeation chromatography measurements gave values that were close to that of the unmodified PCL. The oxazoline-grafted polyester gave considerable increase in the tensile force when compared with that of pure PCL. The grafting reaction was confirmed using Fourier transform infrared spectroscopy and nuclear magnetic resonance techniques. A probable reaction mechanism for the grafting reaction is proposed. (C) 1998 John Wiley & Sons, Inc. [References: 17]
机译：使用双螺杆挤出机通过自由基引发反应将恶唑啉反应性基团接枝到聚己内酯（PCL）上。低挥发性的恶唑啉化合物用于促进高温接枝反应。评估了熔体温度，螺杆速度，引发剂和单体浓度对接枝物含量的影响。接枝物含量为0.7至2.6％。熔体温度的升高和螺杆速度的降低都增加了接枝的含量。借助特性粘度和凝胶渗透色谱法评估的分子量和分子量分布得出的值接近未修饰的PCL。与纯PCL相比，恶唑啉接枝的聚酯的拉伸力显着提高。使用傅里叶变换红外光谱和核磁共振技术证实了接枝反应。提出了一种可能的接枝反应机理。 （C）1998 John Wiley＆Sons，Inc. [参考：17]

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