超细酞菁蓝微粒的制备及其电泳性能的研究  

Preparation of Phthalocyanine Blue Nanocrystals and their Electrophoretic Properties

作　　者：许恒哲[1] 乐园[1] 陈建峰[1] 

机构地区：[1]北京化工大学纳米材料先进制备技术与应用科学教育部重点实验室,北京100029

出　　处：《高校化学工程学报》2009年第4期639-643,共5页Journal of Chemical Engineering of Chinese Universities

基　　金：国家863重点项目(2008AA03A332)

摘　　要：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350nm,沉降率22.3%,电场响应时间为6.1s。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 particles modified by anionic surfactant sodium dodecyl sulfate （SDS） have the most superior properties. The effects of experimental conditions, such as the amount of surfactant added, the species of antisolvent used and the recrystallization temperature, on the dispersibility and the charge property of the modified recrystallized particles were discussed, and the optimal recrystallization conditions were proposed. Under these proposed conditions, the average size of the modified recrystallized CuPc particles can be reduced to 350 nm, and both their stability and electrophoretic mobility are significantly improved; their sedimentation is down to 22.3% and their response time is 6.1 s.

关 键 词：酞菁蓝 重结晶 稳定性 响应时间 

分 类 号：TQ613.5[化学工程—精细化工]