壳聚糖/SiO_2复合材料制备及质子传导性能研究  

Preparation and proton conductivity property of chitosan/SiO_2 composites

作　　者：李广慧[1] 庄灵慧 赖茂椿 乐立查 

机构地区：[1]福建工程学院材料科学与工程学院,福建福州350118

出　　处：《福建工程学院学报》2017年第1期5-8,共4页Journal of Fujian University of Technology

基　　金：福建省教育厅项目(JB11123)

摘　　要：采用浸渍法在二氧化硅多孔材料中负载壳聚糖制备壳聚糖/SiO_2复合材料,通过X射线衍射、扫描电子显微镜、傅立叶变换红外光谱等方法对所制备材料的组成与结构进行了表征,采用热重-差示扫描量热法研究了复合材料的热稳定性,采用电流中断法测定所制备材料的电导率来衡量其质子传导性能,并考察了壳聚糖溶液浓度对壳聚糖/SiO_2复合材料导电性能的影响。结果表明,壳聚糖/SiO_2复合材料具有较高的热稳定性,复合材料的电导率随着壳聚糖乙酸溶液浓度的增加而增加,当壳聚糖乙酸溶液质量百分比浓度为2.5%时,电导率可达1.82 S/cm。The ehitosan/SiO2 composites were prepared by impregnating chitosan into porous silica matrix. The composition and structure of as-prepared samples were characterized by X-ray diffraction （ XRD）, scanning electron microscopy （SEM） and Fourier transform infrared spectroscopy （FIIR）. The thermal stability of the composites was studied by thermogravimetry-differential scanning calorimetry （ TG-DSC ）, and the proton conductivity of the composites was measured by the current interruption method. The effects of the concentration of chitosan solution on the conductivity of the chitosan/SiO2composites were also investigated. The results indicate that the chitosan/SiO2 composites exhibit higher thermal stability. Moreover, the proton conductivity of the composites increases with the concentration of chitosan-acctic acid solution, and the proton conductivity reaches 1.82S/cm when the concentration of chitosan solution is 2.5%（wt）.

关 键 词：固相浸渍 复合材料 质子传导性能 

分 类 号：TB31[一般工业技术—材料科学与工程]