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二次膜射流乳化法制备单分散乳液模板的研究
  • 期刊名称:南京工业大学学报, 2006,28(1):15-17,33.
  • 时间:0
  • 分类:TQ027.3[化学工程] TQ051.7
  • 作者机构:[1]南京工业大学化学化工学院,江苏南京210009
  • 相关基金:国家杰出青年科学基金(20125618);国家重点基础研究发展计划(2003GB615707);国家自然科学资金重点项目(20436030)资助
  • 相关项目:新型分离材料的制备与应用的关键科学问题
中文摘要:

乳液模板法是一种制备高度有序多孔材料的重要方法,而膜乳化法则是一种新型的通过膜结构制备乳液的方法。文中提出了一种采用二次膜射流乳化制备单分散乳液模板的方法,平均孔径为0.16μm和1.5μm的陶瓷膜分别被作为两次乳化的乳化介质。采用异辛烷/甲酰胺体系为研究对象,嵌段高分子聚(乙二醇)-聚(丙二醇)-聚(乙二醇)作为乳化剂。实验表明一级膜乳化过程的通量为75.4IV(m^2·h),二级膜乳化过程的通量可达到169.9L/(m^2·h)。所得单分散乳液模板的平均粒径为1.8μm,且在10 h内能保持较好的稳定性。

英文摘要:

Emulsion template is an important tool for the preparation of ordered porous materials, and membrane emulsification is a new technology basing on membrane structure. In this paper, a novel method for preparation monodispersed emulsion template using two-stage membrane jet-flow emulsifcation was proposed. The two membraneswith a pore size of 0. 16μm and 1.5μm were separately used in the two stages. The formamide was used as thecontinuous phase, the isooctaner as the dispersed phase and the triblock copolymer as emusifier. The flux in thefirst stage and second stage are 75.4 L/( m^2·h)and 169. 9 L/( m^2·h) , respectively. The mean droplet size of themonodispersed emulsion was 1.8μm and the stability of the emulsion template was also investigated.

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