摘要
为提高聚对苯二甲酸乙二醇酯(PET)复合膜的吸水性和光能转化功能,以PET薄膜为基材,通过涂覆法将具有较好吸水性能的羧甲基纤维素(CMC)和光能转换功能的有机稀土配合物引入到PET薄膜表面,得到了具有超吸水和光能转换功能的PET复合膜;采用光学显微镜、DSA100型全自动微观动态接触角测量仪、荧光光谱仪等测试手段对样品的组成结构和性能进行分析测试。结果表明:所制备的PET复合膜具有良好的吸水和防雾功能,当聚乙二醇(PEG)与聚乙烯醇(PVA)质量比为1∶1时,所制备的PET复合膜尽管只有2μm的功能层却可在1 s内将薄膜表面的水滴吸收且其吸水率可达27.87%;在60℃水蒸气环境下持续10 h以上,PET复合膜仍然保持透明状态无液滴附着。同时,在紫外灯照射下,PET复合膜的相对荧光强度可达1715,呈现出亮丽的红光,展现出优异的光能转换功能,有利于植物的光合作用。
In order to improve the water absorption and light energy conversion function of polyethylene terephthalate(PET)composite film,using PET film as a substrate,a carboxymethyl cellulose(CMC)with good water absorption properties and an organic rare earth complex with light energy conversion function were introduced into the PET film by a coating method on the surface,a PET composite film with super water absorption and light energy conversion functions was obtained.The structure and properties of the as-prepared samples were characterized by optical microscope,DSA100 contact angle meter,fluorescent spectrophotometers and other testing methods.The results show that the prepared PET composite film has good water absorption and anti-fog functions.When the mass ratio of polyyethylene glycol(PEG)to polyvinyl alcohol(PVA)is 1∶1,although the prepared PET composite film only has a functional layer of 2μm,it can absorb water droplets on the film surface within 1 s and its water absorption rate can reach 27.87%;in the water vapor environment at 60℃for more than 10 hours,the PET composite film still remains transparent without droplets.At the same time,the relative fluorescence intensity of PET composite film can reach 1715(a.u.)under UV light,appearing bright red light,showing excellent light energy conversion function,which is beneficial to photosynthesis of plants.
作者
西鹏
富慧中
杨龙
程博闻
XI Peng;FU Hui-zhong;YANG Long;CHENG Bo-wen(School of Material Science and Engineering,Tiangong University,Tianjin 300387,China;Tianjin Key Laboratory of Advanced Fibers and Energy Storage,Tiangong University,Tianjin 300387,China;State Key Laboratory of Separation Membranes and Membrane Processes,Tiangong University,Tianjin 300387,China)
出处
《天津工业大学学报》
CAS
北大核心
2020年第4期1-7,共7页
Journal of Tiangong University
基金
国家自然科学基金资助项目(51373118)
天津市自然科学基金重点项目(18JCZDJC38300)。
关键词
聚对苯二甲酸乙二醇酯
羧甲基纤维素
稀土配合物
防雾
吸水
荧光
光能转化
polyethylene terephthalate
carboxymethyl cellulose
rare earth complex
anti-fog
water absorption
fluorescence
light energy conversion
