超细酞菁蓝微粒的制备及其电泳性能的研究

实验采用反溶剂重结晶方法制备超细酞菁蓝(CuPc)颗粒,在重结晶过程中加入了不同类型的表面活性剂对酞菁蓝原料进行改性.用红外光谱(FT-IR)表征了重结晶粒子的表面组成,并通过扫描电镜(SEM)与激光粒度仪观察了粒子的形貌、分散情况及粒径分布.采用静态沉降法探讨了粒子在四氯乙烯中的稳定性,并利用电泳测试仪对粒子的电场响应特性进行测试.结果表明,重结晶过程中加入阴离子表面活剂十二烷基硫酸钠(SDS),所制得的粒子其分散稳定性和带电性最好.考察了SDS用量、反溶剂类型、反应温度对粒子稳定性和带电性的影响.得到的酞菁蓝最可几粒径为350 nm,沉降率22.3%,电场响应时间为6.1 s.

Preparation of Phthalocyanine Blue Nanocrystals and their Electrophoretic Properties

The phthalocyanine blue (CuPc) particles were recrystallized by the anti-solvent method,and at the same time were modified by different surface active agents,respectively. The surface compositions and morphologies of the modified recrystallized particles were characterized by FT-IR and SEM,respectively,and their dispersibility and electrophoretic mobility were investigated by size analyzer,settlement experiments and electrophoretic instrument,respectively. The experiments show that the recrystallized partic...