食品与发酵工业 >

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

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

研究报告

纳米SiO2改性聚乙烯醇/季铵盐壳聚糖复合膜的性能研究

  • 黄益飞 ,
  • 柯俊沐 ,
  • 苏羽航 ,
  • 林新兴 ,
  • 余立 ,
  • 刘钊骥
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  • 1(福建技术师范学院, 福建 福州, 350300)
    2(食品软塑包装技术福建省高校工程研究中心, 福建 福州, 350300)
    3(福州市包装工程行业技术创新中心, 福建 福州, 350300)
第一作者:硕士,助教(通信作者,E-mail:xmuthuangyifei@163.com)

收稿日期: 2024-07-07

  修回日期: 2024-07-28

  网络出版日期: 2025-06-11

基金资助

福建省自然科学基金项目(2023J011123)

收起

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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摘要

以聚乙烯醇(polyvinyl alcohol,PVA)和季铵盐壳聚糖(quaternary ammonium chitosan,QAC)为成膜基材,研究了不同质量分数(2%、4%、6%、8%、10%,相对于干基总质量)的纳米SiO2对PVA/QAC复合膜的结构和物化特性的影响,利用傅里叶变换红外光谱分析、X射线衍射分析(X-ray diffraction,XRD)、扫描电镜对复合膜结构进行表征,并对其力学性能、水蒸气透过性、吸水率、透光率、土埋降解率进行测试。扫描电镜和红外光谱分析结果表明,复合膜表面致密平整,PVA、QAC与纳米SiO2相容性好且存在着氢键作用。XRD结果表明,当纳米SiO2添加量为2%时,复合膜结晶度上升,同时力学性能显著提高(P<0.05),拉伸强度与断裂伸长率分别达到23.9 MPa和538.7%。并且随着纳米SiO2含量增加,降低了复合膜的吸水率与透光率,但延缓了其生物降解性。因此,纳米SiO2可有效改善PVA/QAC复合膜的综合性能,使其在食品包装领域具有潜在应用价值。

关键词： 聚乙烯醇; 季铵盐壳聚糖; 纳米SiO2; 复合膜; 生物降解

本文引用格式

黄益飞 , 柯俊沐 , 苏羽航 , 林新兴 , 余立 , 刘钊骥 . 纳米SiO2改性聚乙烯醇/季铵盐壳聚糖复合膜的性能研究[J]. 食品与发酵工业, 2025 , 51(10) : 152 -157 . DOI: 10.13995/j.cnki.11-1802/ts.040423

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

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