Photo-degradation of Lexan polycarbonate studied using positron lifetime spectroscopy

Hareesh, K. and Pandey, A. K. and Meghala, D. and Ranganathaiah, C. and Sanjeev, G. (2013) Photo-degradation of Lexan polycarbonate studied using positron lifetime spectroscopy. In: AIP Conference Proceedings.

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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.

Item Type: Conference or Workshop Item (Paper)
Subjects: D Physical Science > Physics
Divisions: Department of > Physics
Depositing User: Arshiya Kousar Library Assistant
Date Deposited: 13 Sep 2019 06:34
Last Modified: 13 Sep 2019 06:34

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