波谱学杂志 ›› 2011, Vol. 28 ›› Issue (4): 512-522.

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聚四氟乙烯的辐射效应及其ESR研究

沈光来,苏吉虎, 陈家富*   

  1. 中国科学技术大学 合肥微尺度物质科学国家实验室,安徽 合肥 230026
  • 收稿日期:2011-09-29 出版日期:2011-12-05 发布日期:2011-12-05
  • 基金资助:

    安徽省自然科学基金资助项目(11040606M53).

Radiation Effect on Polytetrafluoroethylene Studied by ESR

 SHEN Guang-Lai, SU Ji-Hu, CHEN Jia-Fu*   

  1. Hefei National Laboratory for Physical Sciences at Microscale, Department of Morden Physics, University of Science and Technology of China, Hefei 230031, China
  • Received:2011-09-29 Online:2011-12-05 Published:2011-12-05
  • Supported by:

    安徽省自然科学基金资助项目(11040606M53).

摘要:

该文回顾了从上世纪50年代中期至近年来人们在聚四氟乙烯(PTFE)辐射效应方面的研究工作,初步总结了辐射PTFE产生的自由基及其相应的过氧化自由基的电子自旋共振(ESR)波谱学应用研究,总结并讨论了实验温度、辐射剂量、PTFE粉末形式、结晶度和交联等因素对辐射PTFE自由基ESR信号的影响. 同时还简要介绍了辐射PTFE后的自由基反应以及辐射交联的进展情况.

关键词: 电子自旋共振(ESR), 聚四氟乙烯, 辐射, 降解, 交联

Abstract:

This review introduces some of the pioneering works on radiolysis of polytetrafluoroethylene (PTFE), which started in the mid 1950s. The electron spin resonance (ESR) studies on radiation-induced radicals and their corresponding peroxy radicals in PTFE were reviewed, with respect to experimental conditions, irradiation dose, structures of PTFE powders (i.e., crystallinity and crosslinking).

Key words: ESR, PTFE, irradiation, degradation, crosslinking

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