Photo-degradation of Lexan polycarbonate studied using positron lifetime spectroscopy

K. Hareesh, A. K. Pandey, D. Meghala, C. Ranganathaiah, Ganesh Sanjeev

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


The free volume properties of pristine and UV irradiated Lexan polycarbonate have been investigated using Positron Lifetime Spectroscopy (PLS). The decrease in o-Ps life time and free volume size of irradiated sample is attributed to free volume modification and formation of more stable free radicals. These free radicals are formed due to the breakage of C-O bonds in Lexan polycarbonate after irradiation. This is also supported by the decrease in the intensity of C-O bond after exposure to UV-radiation as studied from Fourier Transform Infrared (FTIR) spectroscopy and it also shows that benzene ring does not undergo any changes after irradiation.

Original languageEnglish
Title of host publicationSolid State Physics - Proceedings of the 57th DAE Solid State Physics Symposium 2012
Number of pages2
Publication statusPublished - 2013
Event57th DAE Solid State Physics Symposium 2012 - Bombay, Mumbai, India
Duration: 03-12-201207-12-2012

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference57th DAE Solid State Physics Symposium 2012
CityBombay, Mumbai

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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