细乳液聚合法制备双相核材料的电子墨水纳胶囊

Encapsulation of two-phase core materials into electronic ink nanocapsules by miniemulsion polymerization

利用细乳液法制备包含炭黑纳米颗粒/TiO2纳米颗粒和分散剂[四氯乙烯(TEC)和SPAN-80的混合液]的双相核材料的电子墨水纳米胶囊。以苯乙烯(SM)-甲基丙烯酸甲酯(MMA)为反应单体,十六烷(HD)为疏水剂,偶氮二异丁腈(AIBN)为引发剂,聚乙烯醇(PVA)为表面活性剂,乙醇为溶剂。把分别包含TiO2有机胶体、炭黑纳米颗粒、TiO2纳米颗粒聚合物纳胶囊以及什么都不包含的纯聚合物纳米胶囊进行了对照。讨论了PVA含量对纳米胶囊粒径的影响,乙醇对纳米胶囊粒径分布的影响,以及不同的表面修饰物对包含碳黑纳米颗粒/TiO2纳米颗粒纳囊的影响。

Miniemulsion polymerization was used to produce encapsulation of two-phase electronic ink nanocapsules-carhon hlack/TiO2 nanoparticles as dispersant phase and the mixture of tetrachloroethylene （TEC） and SPAN-80 as dispersant agent. In this experiment, styrene （SM）-methyl methacrylate （MMA） was used as re- action monomers, hexadecane （HD） as hydrophobe, azobisisobutyronitrile （AIBN） as initiator, polyvinyl alco- hol （PVA） as surfactant and ethanol as solvent. In this article, we do a lot of research on nanocapsules that en- capsulate different chemicals such as organic colloidal of TiO2, carbon black nanoparticles, TiO2 nanoparticles and the pure polymer nanoparticles and discuss the effects of PVA content, ethanol and different surface modification on nano-encapsulated particles on particle size and particle size distribution of carbon black/TiO2 nanoparticles.