Morphological, Thermal and Electrical Properties of (PEO/PVP)/ Au Nanocomposite Before and After Gamma-Irradiation
| Autor: | S.I. Badr, E.M. Abdelrazek, A.M. Abdelghany, M.A. Morsi |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Nanocomposite Materials science Scanning electron microscope education technology industry and agriculture 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Differential scanning calorimetry Chemical engineering Electrical resistivity and conductivity Colloidal gold 0103 physical sciences Thermal stability Polymer blend Irradiation Composite material 0210 nano-technology |
| Zdroj: | Journal of Research Updates in Polymer Science. 6:45-54 |
| ISSN: | 1929-5995 |
| Popis: | Gold nanoparticles (Au NPs) have been successfully biosynthesized by Chenopodium murale ( C. murale ) leaf extract. Au NPs were incorporated within polyethylene oxide (PEO)/polyvinyl pyrrolidone (PVP) polymer blend by casting method. Scanning electron microscope (SEM), Differential scanning calorimetry (DSC), and DC electrical resistivity were used to investigate the morphological, thermal, and electrical properties of blend/Au nanocomposite before and after gamma-irradiation at different doses (1, 2, 3, 4 and 5 MR).SEM micrographs confirmed the dispersion of Au NPs within the polymeric matrix due to effect of irradiation process. DSC analysis showed that the thermal stability for irradiated samples was improved as compared with pure blend and its nanocomposite. DC measurements revealed nonlinear behavior for electrical resistivity versus temperature. The electrical resistivity values for blend/Au nanocopmosite and its high irradiated samples were less compared to pure blend. |
| Databáze: | OpenAIRE |
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