Pyrolysis of γ-irradiated bisphenol-A polycarbonate

<i>γ</i>-Ray Modifications of Optical/Chemical Properties of Polycarbonate Polymer

“…In addition to this, the ionizing radiations may also produce random fracture of main chain and braking of original bonds giving rise to the formation of free radicals, double/triple bonds, cross linking [2]- [8], carbon cluster formation [9] [10] and evolution of ionic species and gaseous components etc. [11] [12].…”

“…The Raman spectroscopy of 1 MeV Ag + ions irradiated PC was studied by Bahniwal et al [10] and pointed out the formation of carbonaceous graphite-like layer containing a network of graphite clusters. Navarro et al [11] showed that PC irradiation was accompanied with the preferential release of carbon monoxide followed by minor production of hydrogen, carbon dioxide and methane.…”

“…The broadening of −OH band is an indicative of occurrence of intermolecular bonding. Navarro-González[11] observed the formation of phenol after the Pyrolysis of γ-irradiated bisphenol-A polycarbonate.…”

8 MeV Electron Induced Changes in Structural and Thermal Properties of Lexan Polycarbonate

“…Literature survey indicates that the effects of radiation on Lexan are being extensively studied. Exposure to gamma [13,18,19] and RF plasma [20] shows significant optical, chemical and surface modifications. However, to modify the polymer, energy loss of ion beam is very important and specific to its nature, energy and environment.…”

“…The polymers, which are difficult to process by chemical methods, can be easily modified using electron irradiation [5,6]. This leads to significant changes in structural [7][8][9][10][11] and thermal [12] properties due to radiochemical alterations such as unsaturation, evolution of gases [13], formation of carbon clusters, change in free volume [6], creation of defects and amorphization [6,14] etc. As a result, electron beam irradiation of polymers has shown great potential for the fields such as microelectronics, biomedical, device technology, nano-materials and materials science [15][16][17].…”