DVB泡沫微胶囊的制备方法  

A Method to Make Divinylbenzene Foam Shells by ICF Target

作　　者：崔轶[1,2] 范勇恒[1] 罗炫[1] 刘磊[2] 张林[1] 林润雄[2] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900 [2]青岛科技大学橡塑材料工程教育部重点实验室,山东青岛266042

出　　处：《高分子材料科学与工程》2010年第6期130-133,共4页Polymer Materials Science & Engineering

基　　金：中国工程物理研究院科学技术发展基金资助课题(2008B0302032);新型耐热高分子材料-聚亚胺酮的合成与性能研究(08-1-3-15-jch)

摘　　要：根据密度匹配乳液技术设计开发了一套用于微胶囊制备的三喷嘴乳粒发生器,利用该装置实现了空心泡沫微球的可控连续制备。以二乙烯基苯(DVB)的邻苯二甲酸二丁酯(DBP)溶液为油相(O),双蒸水与重水的混合液为内水相(W1),质量百分比为5%的聚乙烯醇(PVA)水溶液作为外水相(W2)制作出水/油/水(W1/O/W2)双重微乳液。以偶氮二异丁腈(AIBN)为引发剂,通过水平旋转水浴加热方式使DVB凝胶固化,采用CO2超临界法干燥,最终制得直径(1.0mm～4.0mm)和壁厚(90μm～360μm)可调的DVB微胶囊。利用扫描电镜对微胶囊的形貌进行了研究,并归纳出影响微胶囊的粒径大小及单分散性的因素。Designed and developed a triple-orifice droplet generator for the fabrication of hollow foam micro-shell of controlled size continuously.Solutions of an inner water phase,an oil phase （divinylbenzene（DVB） monomer,dibutyl phthalate solvent,and azodiisobutyronitrile initiator）,and an external water phase were used to fabricate double layer emulsion droplet of DVB successfully.The droplets were gelated by a level rotating water bathe.DVB hollow foam micro-shells which are 1000 μm～4000 μm in diameter,90 μm～360 μm in thickness were finally prepared after solvent exchange and CO2 supercritical drying.Characterization of the foam shells was carried out using a scanning electron microscope.Besides,the parameters influencing the diameter and the monodispersity of the micro-shells were investigated.

关 键 词：微胶囊 二乙烯基苯 单分散 

分 类 号：TB383[一般工业技术—材料科学与工程]