新型氧化石墨抗菌烯材料的制备与性能研究

发布时间：2018-02-26 13:42

本文关键词： 石墨烯龙脑手性抗菌壳聚糖气凝胶立体化学　出处：《北京化工大学》2015年硕士论文　论文类型：学位论文

【摘要】：近年来,抗菌材料越来越受人们重视。随着真菌的作用机理和危害逐渐被人们所认知,抗真菌材料和界面的研究受到人们广泛关注,需求也越来越大。另外,近年来雾霾严重,在这些灰尘和雾霾中,细菌也成为了一个危害很大的问题,不仅对环境有着很大的危害,也对人体的健康有着很大的威胁。因此,对于具有拦截性质的抗菌材料的需求便显得非常迫切。对于抗真菌粘附材料,我们创新性的运用手性立体化学抗黏附的概念,将手性龙脑分子通过酯化反应,引入到氧化石墨烯纳米片层表面,制备得到龙脑功能化氧化石墨烯抗菌材料。主要研究成果如下：1.经巯基丁二酸和龙脑进行表面接枝修饰改性制备得到一种龙脑功能化氧化石墨烯。2.修饰后的石墨烯材料具有优异的抗真菌粘附性能。3.龙脑功能化氧化石墨烯具有较低的细胞毒性。4.本文证实了龙脑手性立体化学在真菌与材料界面粘附过程中的作用,为高分子抗菌表面改性提出新的见解与建议。对于壳聚糖交联复合石墨烯气凝胶体系,主要研究内容是采用壳聚糖交联氧化石墨烯,制备得到具有多孔结构的海绵材料,并设计实验及装置,研究该材料的空气过滤、拦截细菌性能和接触抑菌性能。主要研究成果如下：1.壳聚糖与氧化石墨烯交联形成水凝胶后冻干,制备得到一种新型的石墨烯-壳聚糖复合气凝胶材料。该气凝胶表面平整均一,结构致密,该制备方法简单易行,可大面积制备。2.氧化石墨烯-壳聚糖气凝胶对细菌具有一定的抑制作用。3.石墨烯-壳聚糖气凝胶对气体具有较好的拦截抗菌作用。
[Abstract]:In recent years, more and more attention has been paid to antimicrobial materials. With the recognition of the mechanism and harm of fungi, the research of antifungal materials and interfaces has been paid more and more attention. In addition, in recent years, haze is serious. In these dust and haze, bacteria have become a very harmful problem, not only to the environment, but also to human health. The need for antimicrobial materials with blocking properties is very urgent. For antifungal adhesives, we have innovatively used the concept of chiral stereochemistry to resist adhesion by esterification of chiral borneol molecules. On the surface of graphene oxide nanoparticles, The main research results are as follows: 1. A borneol functionalized graphene oxide was prepared by surface grafting modification with mercaptosuccinic acid and borneol. 2. The modified graphene was prepared by grafting modification of mercaptosuccinic acid and borneol. The alkene material has excellent antifungal adhesion property .3.The borneol functionalized graphene oxide has low cytotoxicity .4. the role of chiral stereochemistry of borneol in the process of fungal adhesion to the material interface was confirmed in this paper. For the chitosan crosslinked composite graphene aerogel system, the main research content is to prepare sponge with porous structure by using chitosan crosslinked graphene oxide. Experiments and devices were designed to study the air filtration, blocking bacteria and contact bacteriostasis of the material. The main results were as follows: 1.Chitosan-graphene oxide crosslinked to form hydrogel and freeze-dried, A new kind of graphene chitosan aerogel material was prepared, the aerogel surface was flat and uniform, the structure was compact, and the preparation method was simple and practical. Graphene oxide chitosan aerogel has a certain inhibitory effect on bacteria. 3. Graphene chitosan aerogel has good blocking and antibacterial effect on gas.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ127.11;TB34

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