海藻糖改性聚乙烯醇及其防雾/防霜涂层  

Trehalose-modified Poly(vinyl alcohol)and Their Antifogging/Antifrosting Coatings

作　　者：白景奇 白珊 任丽霞 朱孔营[1,2] 赵蕴慧[1] 李晓晖 袁晓燕[1] BAI Jingqi;BAI Shan;REN Lixia;ZHU Kongying;ZHAO Yunhui;LI Xiaohui;YUAN Xiaoyan(School of Materials Science and Engineering,Tianjin Key Laboratory of Composite and Functional Materials,Tianjin University,Tianjin 300350,China;Analysis and Measurement Center,Tianjin University,Tianjin 300072,China)

机构地区：[1]天津大学材料科学与工程学院,天津市材料复合与功能化重点实验室,天津300350 [2]天津大学分析测试中心,天津300072

出　　处：《高等学校化学学报》2021年第8期2683-2688,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:51773150,51603143)资助。

摘　　要：以聚乙烯醇和羧基化海藻糖为原料合成了聚乙烯醇-g-海藻糖(PVA-g-Tre),将接枝物与少量乙二醇二甲基丙烯酸酯混合,通过光引发聚合制备了亲水性半互穿网络防雾/防霜涂层.通过核磁共振氢谱和傅里叶变换红外光谱对PVA-g-Tre的化学结构进行了表征,利用原子力显微镜、水接触角测试仪、拉曼光谱等分析了涂层表面的粗糙度、润湿性及水与大分子之间的氢键作用,并考察了涂层的透光性和防雾及防霜性能.结果表明,含有不同海藻糖接枝率PVA-g-Tre的涂层表面粗糙度较低且透光率好,与含有PVA的涂层相比,引入海藻糖提高了PVA-g-Tre涂层的亲水性和润湿性,使其同时具有良好的防雾和防霜性能.Trehalose-grafted poly(vinyl alcohol)(PVA-g-Tre)was synthesized from carboxylated trehalose and poly(vinyl alcohol)(PVA),and the hydrophilic semi-interpenetrating polymer network antifogging/antifrosting coatings were further prepared from the trehalose-modified polymer with ethylene glycol dimethacrylate via photoinitiated polymerization.The chemical structure of PVA-g-Tre was characterized by proton nuclear magnetic resonance and Fourier transform infrared spectroscopy.The roughness and wettability of the coating surface as well as hydrogen bonding between water and the polymer were analyzed by atomic force microscopy,water contact angle and Raman spectroscopy,respectively.The transmittance,antifogging and antifrosting properties of the coatings were measured.Results showed that the prepared coatings containing PVA-g-Tre with different trehalose-grafting ratios had low surface roughness with high transmittance.Compared with the PVA coating,the PVA-g-Tre coatings exhibited excellent antifogging and antifrosting properties due to the enhanced hydrophilicity and wettability by introduction of trehalose.

关 键 词：聚乙烯醇 海藻糖 接枝改性 防雾涂层 防霜涂层 

分 类 号：O631[理学—高分子化学]