聚丙烯酸酯/胍盐抗菌乳液可控合成及对纤维素的抗菌改性

项目名称： 聚丙烯酸酯/胍盐抗菌乳液可控合成及对纤维素的抗菌改性

项目编号： No.21306027

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 化学工业

项目作者： 潘远凤

作者单位： 广西大学

项目金额： 25万元

中文摘要： 随着全球人口不断增加、气温变暖及环境污染，研究开发新型、高效、无毒无味和抗菌持久性好的抗菌材料，对增进人体健康，改善生活和工作环境有着重要的现实意义。本项目拟通过分子结构设计，将不饱和双键引入到聚六亚甲基盐酸胍分子链上而得到带有胍基抗菌官能团的单体。然后通过乳液粒子设计，采用半连续种子乳液聚合法将该单体引入到核壳型聚丙烯酸酯乳胶粒子的壳层制备带有较强正电性的核壳型水性聚丙烯酸酯/胍盐抗菌乳液。该乳液既保留聚丙烯酸酯乳液的优良性能，同时也具有特殊的抗菌、杀菌性，利用静电吸附将乳胶粒子固载在植物纤维素表面上，实现纤维素抗菌功能化改性，该法不仅简单易于工业化，而且改性后的纤维素有望应用于造纸、复合材料增强剂等领域。通过表征抗菌乳液的抗菌性能，研究抗菌单体与其他单体之间的抗菌协同作用，建立抗菌乳胶粒子的结构和性能之间的构效关系。同时，采用多种研究手段，研究抗菌乳胶粒子对细菌细胞的作用机理。

中文关键词： 纤维素；抗菌；乳液；表面改性；核壳结构

英文摘要： As the global population getting increase, temperature getting rising and environment getting polluted, the research and development of new antibacterial materials possessing non-toxic, odorless and good antimicrobial lasting performance have important practical significance for the promotion of human health, and improving the living and working environment. The unsaturated double bond is introduced into the chains of poly (hexamethylene guanidine hydrochloride) to obtain a monomer bearing the antibacterial group of guanidine via molecular design in this project. And the product monomer will be introduced to the shell layer of polyacrylate latex particles with core-shell structure through semi-continuous seed emulsion polymerization. Emulsion not only retain the good performance of polyacrylate emulsion, but also has a special antibacterial property. Electrostatic adsorption will be employed to immobilize latex particles on the surface of plant cellulose fiber for rendering cellulose fiber antibacterial. The method is simple and easy to industrialization, and modified cellulose will be applied in the field of papermaking and reinforcement of composite materials. The antibacterial synergy between antibacterial monomer and other monomers will be studied and the structure-activity relationship between the structure

英文关键词： cellulose；antimicrobial；latex；surface modification；core-shell structure