PS微球的制备及三维胶晶模板的组装和应用  

Preparation of polystyrene microspheres and assembly and apply of three-dimensional ordered colloidal crystal template

作　　者：毕参参[1] 李晶[1] 董殿权[1] 

机构地区：[1]青岛科技大学化工学院,青岛266042

出　　处：《化工新型材料》2012年第5期136-138,155,共4页New Chemical Materials

基　　金：国家自然科学基金(10576017);山东省中青年科学家科研奖励基金(2008BS09004);青岛科技大学引进人才科研启动基金资助项目(0022322)

摘　　要：研究了PS微球合成中单体、引发剂和乳化剂浓度以及聚合温度对粒径及分布的影响。采用高速离心沉淀法、恒温加热蒸发诱导法和自然沉降法对单分散PS微球进行了组装,得PS胶体晶体模板,并以其为模板制备了锂离子筛前驱体Li4Mn5O12。用纳米粒度及ZETA电位分析仪、扫描电子显微镜(SEM)、饱和交换容量等表征了材料的粒径及分布、形貌、结构和离子交换性能。结果表明:通过控制反应条件可以在一定范围内制得粒径均一、单分散性好、表面规整光滑的PS微球;PS胶体晶体模板三维有序,排列规整;酸改性后的离子筛前驱体对Li+饱和交换容量为7.49mol/g锂离子筛。Polystyrene （PS） microspheres were preparated by emulsion polymerization method, using styrene as monomer, sodium dodecyl sulfonate （SDS） as emulsifier and potassium persulfate （KPS） as initiator. The effects of concen- tration of styrene, SDS and KPS and polymerization temperature on the particle size and its distribution were studied. PS colloidalcrystal template was achieved by adopting high speed centrifugal precipitation,constant temperature heated evapo ration revulsion and natural settlement method to assemble single scattered PS microspheres. Lithium ion-sieve precursor Li4 Mns O12 was preparated by using PS colloidalcrystal template. Nano particle and ZETA potential analyzer, SEM, Saturat ed exchange capacity test were used to characterize the particle diameter and its distribution, appearance, structure, and ion exchange performance of the oxide. The results showed that： the achieved PS microspheres were not only uniform and mon- odisperse but also smooth and neat. The diameter of PS microspheres was available obtained by controlling the reaction con ditions.

关 键 词：PS微球 晶体胶体模板 乳液聚合法 Li4Mn5O12 

分 类 号：O648[理学—物理化学]