PLA/Eu(DBM)3phen抗紫外薄膜的制备及性能研究  

Properties of Ultraviolet-shielding Composite Film Based on PLA and Eu(II)Complex

作　　者：刘霖泽 吴银财 陈丽彬 李金蕾 王辛坤 林凤龙 王胜龙 云雪艳 董同力嘎 宋立军 LIU Lin-ze;WU Yin-cai;CHEN Li-bin;LI Jin-lei;WANG Xin-kun;LIN Feng-long;WANG Sheng-long;YUN Xue-yan;DONG Tungalag;SONG Li-jun(College of Food Science and Engineering,Inner Mongolia Agricultural University,Hohot O10018,China;Xiamen Institute of Rare Earth Materials Haixi Insitute,Chinese Academy of Sciences,Xiamen 361021,China)

机构地区：[1]内蒙古农业大学食品科学与工程学院,内蒙古呼和浩特010018 [2]中国科学院海西研究院厦门稀土材料研究中心(厦门稀土材料研究所),福建厦门361021

出　　处：《稀土》2023年第4期247-258,I0008,共13页Chinese Rare Earths

基　　金：福建省STS计划配套项目(2021T3011)。

摘　　要：基于透明抗紫外薄膜包装的市场需求,本文以稀土配合物Eu(DBM)3phen为功能助剂采用热压法制备了PLA/Eu(DBM)3phen (P/E)复合薄膜,制备透明抗紫外PLA薄膜材料,并探究了添加量对PLA抗紫外、力学、热力学性能以及透明度的影响。结果表明,随着Eu(DBM)3phen添加量的提高,P/E薄膜的抗紫外性能显著提高。质量分数为1%的P/E1薄膜表现出了最佳的综合性能,其在280 nm~400 nm区间的紫外透过率从PLA的82.1%下降到12.4%,显示出高效的紫外吸收能力,并保持了较好的力学性能和可见区透明度。此外,Eu(DBM)3phen还可以作为成核剂增强PLA的结晶性能。根据荧光光谱分析,P/E薄膜主要通过配合物的“天线效应”,高效吸收紫外线并最终以热与光的形式释放出去。To prepare transparent UV-resistant PLA packaging film materials,this paper prepared PLA/Eu(DBM)3phen(P/E)composite films by a hot pressing method with rare earth complex Eu(DBM)sphen as functional addi-tives and investigated the effects of addition amount on the UV resistance,mechanical and thermodynamic properties,and transparency of PLA.The results showed that the UV shielding performance of P/E films improved significantly with the in-crease of the Eu(DBM),phen flling amount.The P/E1 film with 1%addition showed the best overall performance,with a UV transmitance of 12.39%in the 280 nm~400 nm region,much lower than that of PLA at 82.05%.And the P/E1 film still possessed good mechanical properties and transparency.In addition,Eu(DBM)sphen can be used as a nucleating agent to enhance the crystalline properties of PLA.This paper provides a reference for preparing polymer packaging with UV-shiel-ding performance.

关 键 词：紫外屏蔽 聚乳酸 Eu(DBM)3 phen配合物 食品包装 结晶 

分 类 号：TS206.4[轻工技术与工程—食品科学] TB383.2[轻工技术与工程—食品科学与工程]