Analysis of organometallics dispersed polymer composite irradiated with oxygen ions |
| |
Authors: | NL Singh Anjum Qureshi AK Rakshit DK Avasthi |
| |
Affiliation: | (1) Physics Department, M.S. University of Baroda, 390 002 Vadodara, India;(2) Chemistry Department, M.S. University of Baroda, 390 002 Vadodara, India;(3) Nuclear Science Centre, Aruna Asaf Ali Marg, 110 067 New Delhi, India |
| |
Abstract: | Thin films of polymethyl methacrylate (PMMA) were synthesized. Ferric oxalate was dispersed in PMMA films. These films were irradiated with 80 MeV O6+ ions at a fluence of 1×1011 ions/cm2. The radiation induced changes in electrical conductivity, Mössbauer parameter, microhardness and surface roughness were investigated. It is observed that hardness and electrical conductivity of the film increases with the concentration of dispersed ferric oxalate and also with the fluence. It indicates that ion beam irradiation promotes (i) the metal to polymer bonding and (ii) convert the polymeric structure into hydrogen depleted carbon network. Thus irradiation makes the polymer harder and more conductive. Before irradiation, no Mössbauer absorption was observed. The irradiated sample showed Mössbauer absorption, which seems to indicate that there is significant interaction between the metalion and polymer matrix. Atomic force microscopy shows that the average roughness (R a) of the irradiated film is lower than the unirradiated one. |
| |
Keywords: | Polymethyl methacrylate (PMMA) ion irradiation dielectric properties microhardness M?ssbauer spectroscopy AFM |
本文献已被 SpringerLink 等数据库收录! |
|