纳米Pd/PEG600复合体系的结构形态与流变行为

摘要

Nano palladium/poly (ethylene glycol)600 composite was synthesized in the palladium chloride solution by ultrasonic irradiation,which was analyzed and characterized by high-resolution transmission electron microscopy (HRTEM) and dynamic rheological.The thixotropy of system was influenced by palladium nanoparticles.The results showed that nano-palladium particles is ellipsoid,square and spherical,size at 5 ～ 10 nm,and the crystallinity is better;the viscosity and thixotropy of nano Pd/PEG600 composite are improved,which may be formed by PEG600 with the nano palladium tubular structure.%采用超声辐射法,以氯化钯水溶液为前驱体,制备了纳米Pd/PEG600复合材料；利用高分辨透射电子显微镜并结合流变学方法,考察了纳米钯粒子对复合体系触变性的影响,并研究了纳米钯粒子的结构形态.结果表明,超声制备的纳米钯粒子呈椭球形、方形和球形,尺寸在5 ～10 nm,并且结晶度较好;复合体系的黏度和触变性均有所提高,这可能是纳米钯与PEG形成的特殊管状结构造成的.