食品与发酵工业2025，Vol.51Issue(10)：152-157,6.DOI:10.13995/j.cnki.11-1802/ts.040423
纳米SiO2改性聚乙烯醇/季铵盐壳聚糖复合膜的性能研究
Study on properties of nano-SiO2 modified polyvinyl alcohol/quaternary ammonium chitosan composite films
摘要
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)compos-ite 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.关键词
聚乙烯醇/季铵盐壳聚糖/纳米SiO2/复合膜/生物降解Key words
polyvinyl alcohol/quaternary ammonium chitosan/nano-SiO2/composite membrane/biodegradation引用本文复制引用
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):152-157,6.基金项目
福建省自然科学基金项目(2023J011123) （2023J011123）
