反向浓乳液聚合制备嵌套型双亲胶体粒子

Amphiphilic Colloidal Particles Prepared Via Inverted Concentrated Emulsion Polymerizaiton

通过反向浓乳液聚合在亲水的聚丙烯酰胺 (PAAM)核表面包盖亲油的聚甲基丙烯酸正丁酯 (PBMA)壳层来制备嵌套型双亲胶体粒子。壳层的网状或泡孔型结构使得亲水性核可与外界接触 ,从而使粒子与水相和油相都相容。以粒子对水和柴油的吸收率来表征其双亲性 ,壳层结构通过扫描电子显微镜 (SEM)观测。改变聚合体系配方和反应条件可调节壳层厚度及其结构。壳层由于交联剂作用及分子链间缠结而有很好稳定性。

Amphiphilic colloidal particles were prepared via inverted concentrated emulsions with hydrophilic polyacrylamide cores encapsultated by hydrophobic poly (n-butyl methacrylate) shells.The hydrophobic shell possesses a netlike or porous structure,which ensures the hydrophilic core accessible and enables the particle to be compatible with both water and oil phases.The amphiphilicity of the particles was characterized by their water and diesel oil absorbabilities and the structure of the shells was seen by scanning electron microscope.The polymerization recipes and reaction conditions could adjust the structure and thickness of the shells.The shells proved to be stable because of crosslinker and other factors.