Food and Fermentation Industries >

2025 , Vol. 51 >Issue 10: 152 - 157

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.040423

Study on properties of nano-SiO2 modified polyvinyl alcohol/quaternary ammonium chitosan composite films

  • HUANG Yifei ,
  • KE Junmu ,
  • SU Yuhang ,
  • LIN Xinxing ,
  • YU Li ,
  • LIU Zhaoji
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  • 1(Fujian Polytechnic Normal University, Fuzhou 350300, China)
    2(Fujian Universities and Colleges Engineering Research Center of Soft Plastic Packaging Technology for Food, Fuzhou 350300, China)
    3(Fuzhou Packaging Engineering Industry Technology Innovation Center, Fuzhou 350300, China)

Received date: 2024-07-07

  Revised date: 2024-07-28

  Online published: 2025-06-11

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Abstract

This study investigated the effects of various mass fractions (2%, 4%, 6%, 8%, and 10%, relative to total dry mass) of nano-SiO2 on the structure and physicochemical properties of polyvinyl alcohol (PVA)/quaternary ammonium chitosan (QAC) composite films.The structural characterization of the composite films was performed using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM).Additionally, the mechanical properties, water vapor permeability, water absorption, light transmittance, and soil burial degradation rate were evaluated.The SEM and FTIR results indicated that the composite films exhibited a dense and smooth surface, demonstrating good compatibility among PVA, QAC, and nano-SiO2, as well as the presence of hydrogen bonding.The XRD analysis revealed that the crystallinity of the composite film increased with the addition of 2% nano-SiO2, which significantly enhanced the mechanical properties (P<0.05).The tensile strength and elongation at break reached values of 23.9 MPa and 538.7%, respectively.Furthermore, increasing the content of nano-SiO2 led to a reduction in both water absorption and light transmittance of the composite films, while also slowing their biodegradation.Overall, nano-SiO2 effectively improves the performance of PVA/QAC composite films, suggesting promising applications in food packaging.

Key words： polyvinyl alcohol; quaternary ammonium chitosan; nano-SiO2; composite membrane; biodegradation

Cite this article

HUANG Yifei , KE Junmu , SU Yuhang , LIN Xinxing , YU Li , LIU Zhaoji . Study on properties of nano-SiO2 modified polyvinyl alcohol/quaternary ammonium chitosan composite films[J]. Food and Fermentation Industries, 2025 , 51(10) : 152 -157 . DOI: 10.13995/j.cnki.11-1802/ts.040423

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