Radiation induced nano-scale free volume modifications in amorphous polymeric material: a study using positron annihilation lifetime spectroscopy
作者: Rajesh KumarParamjit SinghS. K. GuptaR. GuptaM. K. JaiswalM. PrasadA. RoychowdhuryR. P. ChauhanD. Das
作者单位: 1Rensselaer Polytechnic Institute (RPI)
2Guru Gobind Singh Indraprastha University
3Gujranwala Guru Nanak Khalsa College
4Aggarwal College
5CSIR-Central Electronics Engineering Research Institute (CEERI)
6UGC-DAE Consortium for Scientific Research
7National Institute of Technology
刊名: Journal of Radioanalytical and Nuclear Chemistry, 2017, Vol.314 (3), pp.1659-1666
来源数据库: Springer Nature Journal
DOI: 10.1007/s10967-017-5510-9
关键词: Gamma radiationCR-39 (DOP)Free volumePositron annihilation lifetime spectroscopyUV–visible
英文摘要: Radiation exposure modifies the nano scale free volume of the polymers which has direct correlation to certain properties of polymeric materials. CR-39 (DOP) polycarbonate polymeric films were exposed to gamma radiation at different doses for the study of nano scale free volume as well as structural and optical properties. An overall increase in the number of free volume holes at all doses was observed. UV–visible studies showed an improvement in the optical properties due to decrease in direct band gap energy. X-ray diffraction spectra of the polymer samples showed the increased amorphous nature of the polymer.
原始语种摘要: Radiation exposure modifies the nano scale free volume of the polymers which has direct correlation to certain properties of polymeric materials. CR-39 (DOP) polycarbonate polymeric films were exposed to gamma radiation at different doses for the study of nano scale free volume as well as structural and optical properties. An overall increase in the number of free volume holes at all doses was observed. UV–visible studies showed an improvement in the optical properties due to decrease in direct band gap energy. X-ray diffraction spectra of the polymer samples showed the increased amorphous nature of the polymer.
全文获取路径: Springer Nature  (合作)
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关键词翻译
关键词翻译
  • annihilation 消灭
  • amorphous 非晶质的
  • scale 度盘
  • visible 看得见的
  • polymeric 聚合的
  • lifetime 寿命
  • polycarbonate 聚碳酸酯
  • volume 体积
  • diffraction 衍射
  • properties 道具