MWCNTs-COOH-g-PEG复合导电材料的制备、表征和性能  

Preparation,Characterization and Properties of MWCNTs-COOH-g-PEG Composite Conductive Materials

作　　者：张新建[1] 牛莉[1] Zhang Xinjian;Niu Li(School of Aeronautics and materials,Anhui Technical College of Mechanical and Electrical Engineering,Wuhu City,Anhui Province 241000)

机构地区：[1]安徽机电职业技术学院航空与材料学院,安徽芜湖241002

出　　处：《黄河科技学院学报》2022年第11期20-25,共6页Journal of Huanghe S&T College

基　　金：安徽省教育厅科学研究重点项目(KJ2021A1514,KJ2020A1118);安徽省教学示范课项目(2021sfk16,2021sfk28);安徽省质量工程项目(2020kfkc149,2020szsfkc0276)。

摘　　要：基于羧基功能化多壁碳纳米管(MWCNTs-COOH)与聚乙二醇(PEG)之间的原子转移自由基聚合反应,制备了一种MWCNTs-COOH-g-PEG复合导电薄膜。分别采用傅里叶变换红外光谱仪(FT-IR)、透射电子显微镜(TEM)和X射线光电子能谱(XPS)进行形态和结构表征,并通过气敏性实验研究薄膜样品对各种有机蒸气的气敏响应性。实验结果表明,PEG通过共价键的方式连接到了MWCNTs-COOH的表面上,所制得的导电复合材料具有良好的分散性,对氯仿蒸气具有较高的选择性、快速的响应速率和良好的稳定性,并随着固化温度的升高,响应强度逐渐增加,有望成为在室温条件下工作并易于制造的新型纳米级传感材料。Based on the atom transfer radical polymerization between carboxyl functionalized multi walled carbon nanotubes(MWCNTs-COOH)and polyethylene glycol(PEG),a MWCNTs-COOH-g-PEG composite conductive film was prepared.Fourier transform infrared spectroscopy(FT-IR),transmission electron microscopy(TEM)and X-ray photoelectron spectroscopy(XPS)were used to characterize the morphology and structure,and the gas sensitivity of the film samples to various organic vapors was studied by gas sensitivity experiments.The experimental results show that PEG is connected to the surface of MWCNTs-COOH by covalent bond.The prepared conductive composites have good dispersion,high selectivity,fast response rate and good stability to chloroform vapor.With the increase of curing temperature,the response strength increases gradually,It is expected to become a new nano sensing material working at room temperature and easy to manufacture.

关 键 词：羧基功能化多壁碳纳米管 导电复合材料 气敏响应性 氯仿 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]