细乳液聚合法制备PY-17/PE蜡/PS复合乳胶粒子

摘要

Multi-component composite latex particles used in color toner were prepared by the mini-emulsion polymerization method. The multi-component composite latex particles were composed of organic pigment PY-17,polyethylene wax and coating material polystyrene. The particle size and distribution of composite latex particles were studied with particle size analyzer,the morphology of the latex particles was studied with transmission electron microscopy (TEM),and the thermal and optical properties of the composite latex particles were studied with thermal gravimetric analyzer and UV-visible spectrophotometry. The effects of types and contents of emulsifiers,contents of organic pigment and contents of polyethylene wax on particle size and morphology of the composite latex particles were studied,and the thermal and optical properties of the composite latex particles were characterized. Composite latex particles with small particle size,uniform size distribution and complete coating could be prepared by using compounded emulsifiers,less than 8%of organic pigments and less than 10%of polyethylene wax based on the content of monomer with change in the thermal and optical properties of the composite latex particles.%通过细乳液聚合法制备彩色墨粉用多组分复合乳胶粒子，即通过细乳液聚合法制备聚苯乙烯包覆有机颜料 PY-17和聚乙烯蜡的三元复合乳胶粒子。通过透射电子显微镜、激光粒度仪、紫外可见分光光度计和热失重分析仪对制备的复合乳胶粒子形貌、粒度、热学和光学特性进行表征，着重研究了乳化剂种类及用量、颜料用量和聚乙烯蜡用量对复合乳胶粒子粒径和形貌的影响，并对复合乳胶粒子的热学及光学特性进行了表征。结果表明，使用复合乳化剂，颜料PY-17用量不大于单体量8%、聚乙烯蜡用量占单体量不大于10%时，制备的复合乳胶粒子粒径较小，分布窄，包覆较为完整；并且复合乳胶粒子的热学及光学特性发生了一定的改变。