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| Research on MgO Nanoparticle Reinforced Chitosan Composite Film and Its Antibacterial Property |
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| DOI：10.11981/j.issn.1000-6842.2019.04.34 |
| Key Words:chitosan; MgO nanoparticles; antibacterial material |
| Author Name | Affiliation | | ZHOU Zifan | School of Environmental and Chemical Engineering， Foshan University， Foshan， Guangdong Province， 528000 |
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| Abstract: |
| This paper mainly introduced the mechanical， thermodynamic and antibacterial properties of spherical magnesium oxide （MgO） nanoparticle reinforced chitosan composite film prepared by in situ synthesis of polymethyl methacrylate （PMMA）/magnesium carbonate prepolymer. When the content of MgO nanoparticles was 5 wt%, the tensile stress and elastic modulus of chitosan/MgO composite film increased by 64% and 50%， respectively， reaching the optimal values. The FT-IR spectrum indicated that the improvement of mechanical properties was mainly due to the hydrogen bond interaction between the hydroxyl and amine groups on chitosan and MgO. In addition， after adding 5 wt% MgO nanoparticles， the oxygen permeability of chitosan composite film was reduced by ~18% and 46% of E. coli was destroyed or killed within 12 h， showing excellent antibacterial performance. |
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