亚微米级聚苯乙烯微球粒度标准物质的研制  

Preparation of Polystyrene Microspheres as Micro-size Standard Materials

作　　者：袁桂梅[1] 赵俊颖[1] 陈胜利[1] 董鹏[1] 周倩[1] 

机构地区：[1]中国石油大学(北京)重质油国家重点实验室,北京102249

出　　处：《过程工程学报》2009年第S2期7-11,共5页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:50702077);国家973计划资助项目(编号:2006CB932601)

摘　　要：以NaHCO3/Na2CO3为pH稳定剂和离子强度调节剂,用无皂乳液聚合法合成了亚微米级聚苯乙烯(PS)微球,用正交实验考察不同因素对合成聚合物微球粒径及粒径分布的影响,优化制备600~1000nm单分散PS微球的工艺条件,放大批量制备了标称粒经是600,800和1000nm的PS微球,合成的PS微球球形度好,相对标准偏差小,均匀性和稳定性都满足国家一级粒度标准物质的要求.Polystyrene(PS) microspheres were prepared through emulsifier-free emulsion polymerization using NaHCO3/Na2CO3 as pH stabilizer and the ionic strength regulator.The effects of reaction temperature,stirring rate and amount of the pH stabilizer on size and monodispersity of the PS particles were investigated by orthogonal experiment method,and the reaction conditions used to prepare 600~1000 nm monodisperse PS microspheres were optimized.The prepared PS microspheres have good sphericity,small relative normal deviation,and their homogeneity and stability can meet the demands of primary standard particles size reference materials.

关 键 词：无皂乳液聚合 PS微球 粒度标准物 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]