Effect of Gamma Radiation on the Properties of Crosslinked Chitosan Nano-composite Film

Journal Article · Wed Aug 15 04:00:00 EDT 2018 · Journal of Polymers and the Environment

DOI:https://doi.org/10.1007/S10924-018-1208-5· OSTI ID:22788018

Ali, H. E. ^[1]; Nasef, Sh. M. ^[2]; El-Bialy, Heba A. ^[3]

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1. National Center for Radiation Research and Technology, Atomic Energy Authority, Radiation Research Division, Radiation Chemistry Department (Egypt)
2. National Center for Radiation Research and Technology, Atomic Energy Authority, Industrial Irradiation Division, Radiation Research of Polymer Chemistry Department (Egypt)
3. National Center for Radiation Research and Technology, Atomic Energy Authority, Biotechnology Division, Radiation Microbiology Department (Egypt)

Chitosan nano-composite film crosslinked by citric acid and with glycerol as plasticizer and MgO as antibacterial agent was prepared by casting method. MgO nanoparticles were synthesized via calcination method in furnace at 500 °C for 4 h and characterized by X-ray diffraction and transmission electron microscope. The chitosan nano-composite film with composition chitosan/citric/glycerol/magnesium oxide (1 wt%:1 wt%:75 vol%:10 wt%) has high mechanical properties than other films. The effects of different irradiation doses on the mechanical, thermal and antibacterial activity were investigated. The tensile strength enhanced by increasing irradiation dose up to 10 kGy and the elongation negligible changed as irradiation dose increased. The thermal stability slightly increased up to dose 2.5 kGy then decreased with dose increment. The antimicrobial activity film was studied against white mulberry-borne bacterial pathogens either Gram positive or Gram negative bacteria and has positive impact of gamma irradiation on the antimicrobial activity. The use of the selected chitosan nano-composite film which irradiated by dose of 2.5 kGy and has magnesium oxide of average particle size 54.3 nm as new packaging materials found to improve storage quality and shelf-life of mulberry fruit.

• OSTI ID: 22788018
• Journal Information: Journal of Polymers and the Environment, Journal Name: Journal of Polymers and the Environment Journal Issue: 8 Vol. 26; ISSN 1566-2543
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
AMINO ACIDS
ANTIMICROBIAL AGENTS
CALCINATION
CITRIC ACID
CROSS-LINKING
GAMMA RADIATION
GLYCEROL
MAGNESIUM OXIDES
NANOCOMPOSITES
NANOPARTICLES
OLIGOSACCHARIDES
PARTICLE SIZE
PLASTICIZERS
RADIATION DOSES
RADIATION EFFECTS
TENSILE PROPERTIES
THIN FILMS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION