The fundamental mechanism of ultrasonically initiated encapsulating emulsion polymerization to prepare polymer / inorganic nanoparticles composites were proposed 通过tem , uv vis , ftir , xrd ,以及电导率的测定表征了导电聚苯胺的结构和性能。
A free radical polymerization mechanism for ultrasonically irradiated emulsion polymerization was proposed . ( 2 ) ultrasonically irradiated encapsulating emulsion polymerization was first used to prepare polymer / inorganic nanoparticles composites 二、采用超声辐照包裹乳液聚合法制备了长期稳定的、聚合物包裹无机纳米粒子的胶乳体系,处理后得到聚合物/无机纳米粒子复合材料。
The results suggested that the ph value , the type of monomers , the type , concentration and surface properties of inorganic nanoparticles , the type and concentration of emulsifier have a great influence on the encapsulating emulsion polymerization and the obtained latex stability . if selecting cationic emulsifier ( ctab ) , low water soluble monomers ( such as ba , st ) and hydrophobic nano - silica , the inorganic nanoparticles would be encapsulated by polymers through ultrasonic irradiation successfully under alkalescent condition 系统研究了ba 、甲基丙烯酸甲酯( mmal苯乙烯旧t )以及它们的共聚体系在超声辐照作用下包裹聚合的主要影响因素,结果表明: ph值、单体的种类、无机纳米粒子的种类、浓度及表面性能、乳化剂的种类及浓度等对超声辐照包裹乳液聚合以及复合体系的稳定性有较大的影响。