硫酸盐木素与丙烯酸的电化学催化聚合机理及其功能调控机制研究

该项目将电化学聚合用于硫酸盐木素与丙烯酸的共聚反应体系，项目组通过工艺调控实现了硫酸盐木素与丙烯酸单体的电化学引发聚合。然而，该电化学聚合体系中硫酸盐木素与丙烯酸共聚的引发机制、反应机理及共聚物的功能调控机制需深入探讨。该项目利用电子自旋共振仪从电化学聚合体系中自由基的产生规律以及调控因素入手，以木素模型物、硫酸盐木素以及木素-丙烯酸共聚物为研究对象，通过对各目标物自由基的产生规律、反应活性等分析，同时利用NMR、HPLC等手段对各目标物的反应产物及特性进行分析，弄清该电化学体系中木素与丙烯酸的共聚引发机理，明确木素与丙烯酸的反应途径以及反应动力学，得到木素丙烯酸共聚物的电化学功能调控机制，最终获得硫酸盐木素与丙烯酸电化学聚合的相关机理，为硫酸盐木素与烯类单体的电化学聚合提供理论基础，为其工业化应用提供理论指导。

The electrochemical polymerization technology is applied to the copolymerization of Kraft lignin and acrylic acid in this proposal. The results from the lab has clearly illustrated that the copolymerization between kraft lignin and acrylic acid can be electroinitiated in aqueous solution. However, the initiation mechanism, reaction mechanism and function regulation mechanism are still unknown and not clear. this proposal focuses on these aspects and will investigate these mechanism. The EPR is going to be used to analyze the radicals content formed during the reaction of lignin models with acrylic acid, the reaction of kraft lignin with acrylic acid as well as the reaction of polymerization of acrylic acid. Also, the NMR，HPLC etc. will be used to analyze the structure and properties of copolymers produced in this system. Through these analysis and experients, the mechanism of initiation, reaction path, kinetics of the reaction as well as the function regulation can be discovered clearly, which will give new theory supplement to the present theory about electrochemical polymerization, and also give a guidance to the application of this technology in industry.