|
|||||
|
|
Radiation induced nano-scale free volume modifications in amorphous polymeric material: a study using positron annihilation lifetime spectroscopy |
|
| Authors: | Rajesh Kumar Paramjit Singh S. K. Gupta R. Gupta M. K. Jaiswal M. Prasad A. Roychowdhury R. P. Chauhan D. Das |
| Affiliation: | 1.Mechanical, Aerospace and Nuclear Engineering,Rensselaer Polytechnic Institute (RPI),Troy,USA;2.University School of Basic & Applied Sciences,Guru Gobind Singh Indraprastha University,New Delhi,India;3.Gujranwala Guru Nanak Khalsa College,Ludhiana,India;4.Department of Physics,Aggarwal College,Ballabgarh,India;5.CSIR-Central Electronics Engineering Research Institute (CEERI),Pilani,India;6.UGC-DAE Consortium for Scientific Research,Kolkata,India;7.Department of Physics,National Institute of Technology,Kurukshetra,India |
| Abstract: | 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. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |