摘要多孔材料因其特有的大量孔隙被广泛使用于制作过滤器、多孔电极、催化剂及催化剂载体等,经常被用在石油化工、医药、建筑等行业。而现今制作多孔材料的方法一般分为“自上而下”和“自下而上”,但是制成的多孔材料不能对周围的环境有所响应,即“不智能”,我们在这次试验中对于这个问题进行了探索。在此次实验中,我们用的是“自上而下”的方式,即静电纺丝来构建PEO纺丝纤维间的孔洞,利用物理吸附法将PVP纤维吸附到PEO无纺布上,因PVP是对环境的PH值有所响应的高分子,所以此无纺布表现出以下特征:第一,此存在密集孔洞的无纺布具有较高的比表面积;第二,此无纺布在中性环境中会呈现密集度高的孔洞,在酸性条件中原吸附上的PVP纤维会掉下,对环境有响应。此次试验通过对溶液浓度的调节,对无纺布的结构进行控制,我们借助电镜(SEM)观察无纺布在吸附前和吸附后的结构变化。44058
Porous materials,because of it’s large number of pores, are widely used to make filter, porous electrodes, catalyst and catalyst carrier, etc.As usuel,it can be used in petrochemical, pharmaceutical and construction industries.The preparation methods including “top - down” and “bottom-up”.However,there are still some open probiem,the porous materials can not have some reponse of the sorrounding environment ,the”not smart enough”.In this experiment,We has carried on the exploration for this problem.we used the”top-down” way,the electrostatic spinning,to build the holes between the PEO spinning fibers.Then, the PVP fiber adsorption on the PEO non-woven fabric by the Physical adsorption,because the PVP fiber will have some reponse of the sorrounding PH.The non-woven fabric will have higher specific surface area,and it can be a reponsive polymer.the structure of non-woven fabric were controlled through the solution concentration,In addition,we try to observe the structural changes of the non-woven fabric in the adsorption before and after adsorption.
毕业论文关键词:多孔材料; 响应性; 吸附法
Keyword: porous materiral; reponsive; physical adsorption
目 录
1引言 0
1.1多孔材料概述 0
1.2PEO及PVP高分子材料的概述 0
1.2.1PEO概述 0
1.2.2PVP概述 0
1.3高分子多孔材料的发展与应用 0
1.3.1高分子多孔材料的发展 0
1.3.2高分子多孔材料的应用 0
1.3.3高分子多孔材料的制作方法 0
1.3.3.1自下而上方法 0
1.3.3.2自上而下方法 0
1.4多孔材料研究存在的问题 0
1.5本论文的研究目标与意义 0
2实验部分 0
2.1实验原料 0
2.2实验设备 1
2.3制备工艺 1
2.4实验表征 1
3结果与讨论 1
3.1不同浓度的PEO溶液对无纺布的结构影响分析 吸附法制备响应性高分子多孔材料及其性能研究:http://www.751com.cn/cailiao/lunwen_45217.html