聚乙烯醇氧化石墨烯导电棉织物的制备

Manufacture of Polyvinyl Alcohol Oxidized Graphene Conductive Cotton Fabric

探讨聚乙烯醇氧化石墨烯导电棉织物的制备方法。采用自制氧化石墨烯和聚乙烯醇通过氢键层层交替沉降组装技术对棉织物进行表面改性，随后低温还原改性棉织物并研究其性能。研究表明：通过氢键自组装，氧化石墨烯和聚乙烯醇在棉织物表面形成交联膜状结构，表面K／8值测试表明氧化石墨烯和聚乙烯醇在织物表面呈“奇偶交替”沉降规律；改性织物较原织物的断裂强度略有提高；组装10次织物表面的电阻率即从7．19×10^7Ω·cm降至146Ω·cm，水洗后电阻率略有增大。认为：还原后改性棉织物具有良好的导电性能，且组装整理后棉织物具有良好的耐水洗牢度。

Manufacture method of polyvinyl alcohol oxidized graphene conductive cotton fabric was dis- cussed. Cotton fabric surface was modified by layer by-layer alternate settlement assembly technology using self made oxidized graphene and polyvinyl alcohol. Then, modified cotton fabric was reduced at lower temperature and its property was studied. The study shows that crosslinking membrane structure was formed with oxidized gra- phene and polyvinyl alcohol on the surface of cotton fabric by selLassembly of hydrogen bond. The test results of surface K/S value show that oxidized graphene and polyvinyl alcohol has settlement principle of odd-even alterna- tion on the surface of fabric. The breaking strength of modified fabric was slightly improved compared with origi nal fabric. The electrical resistivity on the surface of fabric after ten times assembly was decreased from 7.19 ×10^7 Ω· cm to 146Ω· cm. After washing,the electrical resistivity was a little bit enlarged. It is considered that conductivity of modified cotton fabric after reduction is better. Moreover, washing fastness of the cotton fab- ric after assembly finishing has better.