硅烷偶联剂KH-570湿法改性TiO2的结构与性能研究

摘要

利用硅烷偶联剂(KH-570)对纳米二氧化钛(TiO2)进行湿法改性处理.采用静态沉淀法、亲油化度、接触角、X射线光电子能谱( XPS)和傅立叶红外光谱(FT-IR)等手段对改性效果进行分析表征,探析湿法改性机理.研究表明KH-570以化学链形式结合于TiO2表面,改性后TiO2的表面性质由亲水变为亲油.%The titanium dioxide (TiO) nano particles were wet modified with silane coupling agent KH-570.The TiO2 samples before and after modification were analyzed and characterized by static precipitation,degree of oil-affinity,contact angle.X-ray photoelectron spectroscopy (XPS) and Fourier transformed infrared spectroscopy (FT-IR).Results showed that KH-570 was bonded on the surface of TiO2,a firm chemical bonding of KH-570 to TiO2 film and an organic layer were formed.The modified TiO2 surface was changed from hydrophilic to hydrophobic.