Modification of Lexan polycarbonate induced by electron irradiation

K. Hareesh; A. T. Ramaprasad; Ganesh Sanjeev

doi:10.1080/10420150.2011.618839

Modification of Lexan polycarbonate induced by electron irradiation

K. Hareesh
, A. T. Ramaprasad
, Ganesh Sanjeev^*

^*Corresponding author for this work

Department of Physics, Manipal Institute of Technology, Bengaluru

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

An 8MeV electron-induced modification of Lexan polycarbonate (Lexan) films has been studied systematically using UV-visible spectroscopy, LCR meter, X-ray diffractogram (XRD) and differential scanning calorimetry (DSC) techniques. The optical properties of the Lexan films showed a decrease in the optical energy gap with an increase in the electron dose. The AC conductivity and dielectric constant were found to change significantly due to irradiation, and the dielectric constant was found to obey the universal law of dielectric constant. The XRD results show that the crystallite size and the percentage of crystallinity of films decrease after irradiation. The decrease in glass transition temperature shown by DSC studies reveals that the polymeric system has changed towards a more disordered state.

Original language	English
Pages (from-to)	268-274
Number of pages	7
Journal	Radiation Effects and Defects in Solids
Volume	167
Issue number	4
DOIs	https://doi.org/10.1080/10420150.2011.618839
Publication status	Published - 01-04-2012

All Science Journal Classification (ASJC) codes

Radiation
Nuclear and High Energy Physics
General Materials Science
Condensed Matter Physics

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10.1080/10420150.2011.618839

Cite this

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title = "Modification of Lexan polycarbonate induced by electron irradiation",

abstract = "An 8MeV electron-induced modification of Lexan polycarbonate (Lexan) films has been studied systematically using UV-visible spectroscopy, LCR meter, X-ray diffractogram (XRD) and differential scanning calorimetry (DSC) techniques. The optical properties of the Lexan films showed a decrease in the optical energy gap with an increase in the electron dose. The AC conductivity and dielectric constant were found to change significantly due to irradiation, and the dielectric constant was found to obey the universal law of dielectric constant. The XRD results show that the crystallite size and the percentage of crystallinity of films decrease after irradiation. The decrease in glass transition temperature shown by DSC studies reveals that the polymeric system has changed towards a more disordered state.",

author = "K. Hareesh and Ramaprasad, \{A. T.\} and Ganesh Sanjeev",

note = "Funding Information: One of the authors (KH) thanks BRNS, DAE, Government of India, for providing financial assistance. The authors thank the staff of Microtron Centre for their help and support during the course of this work. The authors acknowledge the staff of STIC, Cochin, and the staff of USIC, Karnatak University, for their help during the characterisation of the samples.",

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AU - Hareesh, K.

AU - Ramaprasad, A. T.

AU - Sanjeev, Ganesh

N1 - Funding Information: One of the authors (KH) thanks BRNS, DAE, Government of India, for providing financial assistance. The authors thank the staff of Microtron Centre for their help and support during the course of this work. The authors acknowledge the staff of STIC, Cochin, and the staff of USIC, Karnatak University, for their help during the characterisation of the samples.

PY - 2012/4/1

Y1 - 2012/4/1

N2 - An 8MeV electron-induced modification of Lexan polycarbonate (Lexan) films has been studied systematically using UV-visible spectroscopy, LCR meter, X-ray diffractogram (XRD) and differential scanning calorimetry (DSC) techniques. The optical properties of the Lexan films showed a decrease in the optical energy gap with an increase in the electron dose. The AC conductivity and dielectric constant were found to change significantly due to irradiation, and the dielectric constant was found to obey the universal law of dielectric constant. The XRD results show that the crystallite size and the percentage of crystallinity of films decrease after irradiation. The decrease in glass transition temperature shown by DSC studies reveals that the polymeric system has changed towards a more disordered state.

AB - An 8MeV electron-induced modification of Lexan polycarbonate (Lexan) films has been studied systematically using UV-visible spectroscopy, LCR meter, X-ray diffractogram (XRD) and differential scanning calorimetry (DSC) techniques. The optical properties of the Lexan films showed a decrease in the optical energy gap with an increase in the electron dose. The AC conductivity and dielectric constant were found to change significantly due to irradiation, and the dielectric constant was found to obey the universal law of dielectric constant. The XRD results show that the crystallite size and the percentage of crystallinity of films decrease after irradiation. The decrease in glass transition temperature shown by DSC studies reveals that the polymeric system has changed towards a more disordered state.

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DO - 10.1080/10420150.2011.618839

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JO - Radiation Effects and Defects in Solids

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IS - 4

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Modification of Lexan polycarbonate induced by electron irradiation

Abstract

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