摘要
由纳米钛酸钡与高分子季胺盐型丙烯酸树脂(RMX)构成的复合材料的湿敏性能优于纳米钛酸钡.对纳米钛酸钡及其复合湿敏材料的红外光谱(IR)及光电子能谱(XPS)进行了分析和比较.复合材料的IR谱基本是钛酸钡和RMX的IR谱的结合.在XPS谱中,两类湿敏材料的O(1s)峰都是由晶格氧Ol和吸附氧Oa两峰构成.复合材料的Oa/Ol比大于纳米钛酸钡.在O(1s),Ba(3d)和Ti(2p)谱中,复合材料的主峰同纳米钛酸钡相比,向低结合能方向移动0.3-0.6eV.这是因为复合材料中纳米与有机材料边界区域的晶格结构产生畸变,使其结合能略有减弱.
The humidity sensing composite material made of nano-BaTiO 3 and polymer RMX has better humidity sensitivity than nano-BaTiO 3 .IR and XPS spectra of the nano-BaTiO 3 and the corresponding com posite mate rial were compared and analyzed.The IR spectrum of the composite material looks like a combi nation of those of BaTiO 3 and RMX.In the XPS spectra,O (1s)peaks of the two materials are both composed of two peaks of the lattice oxygen Ol and the adsorption oxygen Oa.The O a /O l ratio of the composite ma terial is larger than that of Ba TiO 3 .The main peaks of the composite material in O(1s),Ba (3d)and Ti (2p)spectra shift0.3~0.6eV to the low combination energy direction com pared with BaTiO 3 .This is attributed to the small distortion of the lattice structure in the boundary range of the nanocrystalline Ba TiO 3 and RMX,which decreases the combination energy.
出处
《材料科学与工艺》
EI
CAS
CSCD
2002年第1期45-47,共3页
Materials Science and Technology
基金
国家自然科学基金资助项目(60074031)