浓乳液法制备聚丙烯腈多孔材料的研究  

Preparation of porous polyacrylonitrile material via emulsion template method

作　　者：师昂 常海涛[1] 

机构地区：[1]泰山医学院化工学院,泰安271000

出　　处：《化工新型材料》2017年第11期87-89,97,共4页New Chemical Materials

基　　金：山东省高等学校科技计划项目(J14LA07);泰安市科技发展计划项目(201430774-05);教育部大学生创新创业训练计划项目(201410439010)

摘　　要：采用浓乳液法制备了聚丙烯腈多孔材料,研究了交联单体的含量、SiO_2浓度和分散相的体积分率等因素对聚丙烯腈多孔材料结构的影响,并使用扫描电镜及氮气等温吸附等手段对材料的结构进行了表征。结果表明,在浓乳液中,纳米SiO_2粒子会吸附在乳液的界面上起到共乳化剂的作用,阻止乳液中分散相液滴的聚集,从而能够有效地提高乳液的稳定性;通过调节浓乳液的组成,如分散相的体积分率、SiO_2和交联剂的浓度等参数可以有效地控制聚丙烯腈多孔材料的孔结构。Highly porous polyacrylonitrile material was prepared via concentrated emulsion template method.With the aid of colloidal silica nanoparticles added to the droplet phase,stable concentrated emulsion was obtained.To investigate their porous morphologies,the foam was characterized by scanning electron microscopy（SEM）and nitrogen adsorption.It was observed that silica nanoparticles acted as a cosurfactant,which was absorbed on the interface of emulsion preventing the coalescence of droplet phase.The cell diameter of polyacrylonitrile foam was controlled within a range of 1μm to 10μm by varying the emulsion composition.Nitrogen adsorption analysis showed that the resulting foam possessed mesoporous pore structure.Our method provided a facile route to fabricate highly porous polyacrylonitrile material with controlled morphology.

关 键 词：浓乳液 多孔材料 疏水性 

分 类 号：O632.62[理学—高分子化学] TB383.4[理学—化学]