聚乳酸纳米复合膜中纳米ZnO的迁移研究  

Migration of nano-ZnO from polylactic acid nanocomposite packaging film into food simulants

作　　者：刘馨心 陈宗瑞 高振杰 袁明龙[1] 江登榜 袁明伟[1] LIU Xin-xin;CHEN Zong-rui;GAO Zhen-jie;YUAN Ming-long;JIANG Deng-bang;YUAN Ming-wei(School of Chemistry and Environment,National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials,Yunnan Minzu University,Kunming 650504,Yunnan,China)

机构地区：[1]云南民族大学生物基材料绿色制备技术国家地方联合工程研究中心,云南昆明650504

出　　处：《云南大学学报（自然科学版）》2023年第1期150-154,共5页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金(52163013)

摘　　要：研究了浸泡迁移实验对负载5%的石墨烯-氧化锌-左旋聚乳酸/左旋聚乳酸复合薄膜材料中纳米氧化锌迁移量的影响,主要探究了在不同食品模拟液(酸性、油性和水性)、温度(30°、45℃和60℃)和浸泡时间(3、5、7 d和10 d)3种条件对薄膜迁移含量、膜的表观结构和水汽透过率的影响.结果表明:在3种环境中均检测到不同程度的纳米氧化锌粒子迁移.其中,纳米氧化锌的迁移规律如下:油性环境>酸性环境>水性环境,且随着温度和时间的延长,迁移量增加,导致纤维膜表面粗糙,水气透过率增加.In this paper,the effects of immersion migration experiment on the migration amount of nano zinc oxide in 5%GO-ZnO-PLLA/PLLA(polylactic acid)composite films were quantitatively studied by full immersion method and atomic absorption spectrometry.The effects of different food simulants(acid,oil and water),temperature(30,45℃and 60℃)and immersion time(3,5,7 d and 10 d)on the migration content,apparent structure and water vapor permeability of the film were mainly explored.The results showed that different degrees of nano-ZnO particle migration were detected in the three environments.Among them,the migration law of nanoZnO is as follows:oil environment>acidic environment>water environment.With the extension of temperature and time,the migration increases,resulting in rough surface of fiber membrane and high water vapor permeability.Experimental significance is good.

关 键 词：纳米氧化锌 迁移 食品包装膜 

分 类 号：TB383[一般工业技术—材料科学与工程]