基于反应性水汽高阻隔环烯烃共聚物复合膜的制备和多性能优化  

Preparation and multi-performance optimization ofreactive water vapor high barriercycloolefin copolymer composite films

作　　者：顾宁[1,2] 刘子萱 吴栋创 王妍 何欢 姚俊儒 曹杨 孙友谊[2] GU Ning;LIU Zixuan;WU Dongchuang;WANG Yan;HE Huan;YAO Junru;CAO Yang;SUN Youyi(School of Energy and Power Engineering,North University of China,Taiyuan 030051,China;School of Material Science and Engineering,North University of China,Taiyuan 030051,China;Shanxi Transformation Comprehensive Reform Demonstration Zone Synthetic Biology IndustryInvestment and Development Co.,Ltd.,Taiyuan 030032,China)

机构地区：[1]中北大学能源与动力工程学院,太原030051 [2]中北大学材料科学与工程学院,太原030051 [3]山西转型综改示范区合成生物产业投资开发有限公司,太原030032

出　　处：《功能材料》2024年第10期10151-10156,10188,共7页Journal of Functional Materials

基　　金：山西省成果转化项目(202204021301049,202304021301030);山西省科技创新团队专项基金(202204051001006)。

摘　　要：针对现有柔性高分子复合膜水汽阻隔性能偏低,且水汽透过率、机械力学强度和光学透过率等多性能难以同时优化的矛盾问题,开发了一种新型氧化镁掺杂环烯烃共聚物复合膜(MgO/COC)。探索了MgO含量对复合膜力学性能、热性能、疏水性能以及水蒸气阻隔性能的影响。研究结果表明,MgO在COC复合膜中具有良好的分散性。当1%(质量分数)MgO掺杂COC时,接触角达到最高(106.8°),表明MgO/COC复合膜具有良好的疏水特性。复合膜的水蒸气阻隔性能比纯COC膜提高了63.1%,最小水汽透过率达到0.21 g/(m^(2)·d),是目前公开报道掺杂型高分子复合膜水汽透过率的最低值。优异的水汽阻隔性能归因于MgO与水汽反应特性形成了氢氧化镁,同时氢氧化镁具有优异水汽阻隔性能。该复合膜双机制水汽阻隔特性为食品包装和医药包装的水汽阻隔设计提供新的思路。In order to solve the problem that the water vapor barrier performance of the existing flexible polymer composite membrane is low,and it is difficult to optimize the water vapor transmission,mechanical strength and optical transmission at the same time,a new magnesium oxide heterocyclic olefin copolymer composite membrane(MgO/COC)was developed in this paper.The effects of MgO content on the mechanical properties,thermal properties,hydrophobic properties and water vapor barrier properties of the composite membrane were explored.The results show that MgO has good dispersion in COC composite film.When 1 wt%MgO was doped with COC,the contact angle reached the highest of 106.8°,indicating good hydrophobic properties of the MgO/COC composite film.The water vapor barrier performance of the composite membrane is 63.1%higher than that of the pure COC membrane,and the minimum water vapor transmission rate reaches 0.21 g/(m^(2)·d),which is the lowest water vapor transmission rate of the doped polymer composite membrane publicly reported at present.The excellent water vapor barrier performance is attributed to the reaction between MgO and water vapor to form magnesium hydroxide,and magnesium hydroxide has excellent water vapor barrier performance.The double mechanism water vapor barrier property of the composite film provides a new idea for the water vapor barrier design of food packaging and pharmaceutical packaging.

关 键 词：水汽阻隔 COC 氧化镁 复合膜 反应型 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]