包装与食品机械2025，Vol.43Issue(1)：63-70,8.DOI:10.3969/j.issn.1005-1295.2025.01.009
不同粒径的LNPs对淀粉基包装膜性能的影响
The influence of LNPs with different particle sizes on the properties of starch-based packaging films
摘要
Abstract
To enhance the performance of starch-based packaging films,lignin nanoparticles(LNPs)with different particle sizes were prepared using a high-speed shearing method and incorporated into starch/polyvinyl alcohol(PVA)to fabricate starch-based films containing LNPs(CP@LNPs).The effects of LNPs with varying particle sizes on the film's surface structure,hydrophobicity,UV resistance,antibacterial properties,and mechanical performance were investigated through Fourier transform infrared spectroscopy(FTIR),scanning electron microscopy(SEM),and other analytical techniques.Results demonstrated that LNPs with particle sizes ranging from 245 to 992 nm could construct a lotus leaf-inspired hydrophobic structure on the film surface,significantly improving hydrophobicity,UV resistance,and antibacterial performance.When the LNPs content was 5%with a particle size of 245.1 nm,the hydrophobic structure formed by LNP aggregates(2.36 μm)on the film surface increased the water contact angle from 78.01° to 104.03°.The hierarchical dynamic interface formed between LNPs and starch enhanced the tensile stress by 24.7%,improved UV resistance by 23.4%,while maintaining 73%transparency.Additionally,the films exhibited bactericidal rates of 85.0%and 92.3%against Escherichia coli and Staphylococcus aureus,respectively.This study provides novel insights and methodologies for developing high-performance starch composite films.关键词
淀粉薄膜/木质素纳米颗粒/疏水结构/抗紫外性能/抗菌性能Key words
starch films/lignin nanoparticles/hydrophobic structure/UV resistance/antibacterial properties分类
轻工业引用本文复制引用
杜光武,郑涛,林宝凤..不同粒径的LNPs对淀粉基包装膜性能的影响[J].包装与食品机械,2025,43(1):63-70,8.基金项目
国家自然科学基金项目(22175045) （22175045）
广西自然科学基金重大项目(2021GXNSFDA220005) （2021GXNSFDA220005）
