Influence of gamma irradiation on structural, thermal and antibacterial properties of HPMC/ZnO nanocomposites

Journal Article · Mon May 23 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4947846· OSTI ID:22606394

Rao, B. Lakshmeesha; Madhukumar, R.; Latha, S.; Shivananda, C. S. ^[1]; Shetty, G. Rajesha ^[2]; Chandra, K. Sharath ^[3]

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1. Department of Studies in Physics, Mangalore University, Mangalagangotri, Mangalore – 574 199 (India)
2. Department of Physics, Government First Grade College, Hiriadka, Udupi – 576 113 (India)
3. Department of Biosciences, Mangalore University, Mangalagangotri, Mangalore – 574 199 (India)

This work was carried out to evaluate the effect of gamma irradiation on the structural, thermal and antibacterial properties of HPMC/ZnO nanocomposite films exposed to Cobalt-60 (Average energy: 1.25 MeV). The X-ray diffraction study revealed that the crystallite size (L in Å) decreased as irradiation dose increased. The crystallinity (X{sub c}) of the nanocomposites initially increased and at higher doses it was decreased. The thermal stability of the nanocomposites increased up to 50 kGy and after that decreased as the irradiation dose increased. But, HPMC/ZnO nanocomposite films, showed a promising range of antimicrobial activity against tested micro-organisms making nanocomposites suitable for food packing and other biomedical applications.

• OSTI ID: 22606394
• Journal Information: AIP Conference Proceedings, Vol. 1731, Issue 1; Conference: DAE solid state physics symposium 2015, Uttar Pradesh (India), 21-25 Dec 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
COBALT 60
FILMS
GAMMA RADIATION
GAMMA SOURCES
IRRADIATION
NANOCOMPOSITES
PHYSICAL RADIATION EFFECTS
RADIATION DOSES
STABILITY
STOWING
X-RAY DIFFRACTION
ZINC OXIDES