包装与食品机械2024，Vol.42Issue(3)：32-38,7.DOI:10.3969/j.issn.1005-1295.2024.03.005
海藻酸钠-纳米氧化锌复合膜的制备及表征
Preparation and characterization of sodium alginate-nano-ZnO composite film
摘要
Abstract
In order to improve the performance of sodium alginate film and endow it with certain antibacterial activity,a composite packaging film with dual functions of antibacterial and UV resistance was prepared by using sodium alginate as the film-forming substrate and adding different contents of nano-ZnO as antibacterial and UV resistant substances.The structure of the composite film was characterized by using UV spectroscopy,X-ray diffraction patterns,and the mechanical properties,moisture resistance,and optical properties of the composite film were tested and analyzed.The results show that the addition of nano-ZnO did not change the structure of sodium alginate film.The composite film has strong UV resistance and the nano-ZnO has good compatibility with sodium alginate.The antibacterial test found that the composite film has antibacterial property,and its antibacterial effect on S.aureus is stronger than that of E coli.The addition of nano-ZnO improves the mechanical properties and moisture resistance of the composite film.When the nano-ZnO content is 5%,it has a maximum tensile strength of 17.13 MPa and a minimum water vapor transmission coefficient of 8.05×10-11 g/(m·s·Pa).ALG-5%ZnO is the composite film with the best ratio.The research provides a reference for the application of nano-ZnO in the field of packaging film.关键词
海藻酸钠/纳米氧化锌/抗紫外/抗菌/双重功能Key words
sodium alginate/nano-ZnO/UV resistant/antibacterial/double function分类
轻工业引用本文复制引用
李轶琳,杨正阳,高媛,李春伟..海藻酸钠-纳米氧化锌复合膜的制备及表征[J].包装与食品机械,2024,42(3):32-38,7.基金项目
黑龙江省自然科学基金项目(LH2019E001) （LH2019E001）
东北林业大学院级大学生创新训练项目(202310225649) （202310225649）
