香草醛改性聚丙烯酸酯/Ti3C2Tx-Cu2O纳米复合涂层微结构与抗菌性调控

聚丙烯酸酯皮革涂饰材料不具有抗菌性，难以克服皮革制品使用过程中易滋生细菌的缺点，无法满足人们对皮革制品的高品质需求。基于此，本项目提出：采用Pickering乳液聚合技术，将生物质基绿色抗菌剂香草醛以及兼具抗菌性和两亲性的无机纳米抗菌剂Ti3C2Tx-Cu2O，同步引入聚丙烯酸酯皮革涂饰剂中，制备有机/无机纳米复合抗菌涂饰材料，并进一步利用Ti3C2Tx-Cu2O纳米片的表面迁移特性，调控其在皮革涂层内部实现梯度分布，构筑“梯度微结构”，提高纳米复合抗菌涂层的抗菌效率。本项目拟探究无机纳米抗菌材料Ti3C2Tx-Cu2O的结构调控规律，揭示其结构参数对其两亲性和表面迁移行为的影响机制，阐明通过Ti3C2Tx-Cu2O在皮革涂层内部梯度分布构筑的“梯度微结构”与涂层抗菌性之间的构效关系。截至目前本项目所含研究内容未见报道。本研究有助于丰富抗菌涂层相关理论，对开发功能型皮革涂层提供了新思路。

Polyacrylate leather finishing materials do not have antibacterial properties, and it is difficult to effectively solve the shortcomings of easy growth of bacteria during the use of leather products, and cannot meet people's demand for high quality leather products. In order to solve the above problems, the biomass-based green antibacterial agent vanillin and the inorganic nano antibacterial agent Ti3C2Tx-Cu2O with both antibacterial and amphiphilic properties will be simultaneously introduced into the polyacrylate leather finishing agent through Pickering emulsion polymerization technology to obtain both green antibacterial and efficient antibacterial organic/inorganic nanocomposite antibacterial coating materials. And further use the surface migration characteristics of Ti3C2Tx-Cu2O nanosheets to control its gradient distribution inside the leather coating, build a gradient microstructure, and improve the antibacterial efficiency of the nanocomposite antibacterial coating. This project will intend to explore the structural regulation of the inorganic nano-antibacterial material Ti3C2Tx-Cu2O, reveal the influence mechanism of its structural parameters on its amphiphilicity and surface migration behavior, and clarify the structure-activity relationship between gradient microstructure and antibacterial properties. Up to now, there are few reports on this research field. This research will be helpful to enrich the relevant theories of antibacterial coatings and provide new ideas for the development of functional leather coatings.