Effect of Gamma Radiation on the Properties of Crosslinked Chitosan Nano-composite Film
| Autor: | Abdul Ghaffar, Heba A. El-Bialy, Sh. M. Nasef, Hussein E. Ali |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Environmental Engineering
Materials science Polymers and Plastics Magnesium technology industry and agriculture chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Chitosan chemistry.chemical_compound chemistry law Ultimate tensile strength Materials Chemistry Thermal stability Calcination Irradiation 0210 nano-technology Citric acid Antibacterial agent Nuclear chemistry |
| Zdroj: | Journal of Polymers and the Environment. 26:3226-3236 |
| ISSN: | 1572-8919 1566-2543 |
| DOI: | 10.1007/s10924-018-1208-5 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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