微流控法制备有机-无机纳米复合微球
ontrollable preparation of organic-inorganic hybrid microspheres in a co-axial microdevice
本文在同轴环管型微通道中，以聚丙烯腈（PAN）的N，N-二甲基甲酰胺（DMF）溶液为分散相，以硅油为连续相，纳米二氧化硅颗粒为无机填充物，研究了流动条件、纳米颗粒含量等对于液滴形成及尺寸的影响。在液-液微分散的基础上，通过在连续相中加入萃取剂，对于膜溶剂DMF进行萃取，实现分散相的固化，制备出直径均一，尺寸可控的聚丙烯腈-纳米二氧化硅复合微球。扫描电子显微镜以及压汞仪对微球进行表征结果显示：固化条件、液滴尺寸、纳米颗粒含量等都会对微球的形态和结构产生影响。
his article describes a microfluidic method to prepare organic-inorganic hybrid microspheres. Polyacrylonitrile was dissolved in N,N-dimethylformamide and then emulsified in silicone oil via a co-axial microfuidic device. Silicon dioxide nanoparticle was chosen as the inorganic filler. Effects of flow rates and dispersed nanoparticles on droplet size were studied for this working system. The solidification of droplets was realized by adding n-butyl acetate in oil phase which can extract N,N-dimethylformamide from the dispersed phase. The hybrid microspheres prepared have the advantages of controllable size and narrow size distribution. And the morphology of microspheres can be controlled by varying solidification condition, drop diameter and the concentration of nanoparticles
徐建鸿、骆广生、刘畅、兰文杰
化学高分子化合物工业化学纤维工业
微流控技术微球纳流体有机-无机纳米复合材料
microfluidicmicrospheresnanofluidicorganic-inorganic hybrid materials
徐建鸿,骆广生,刘畅,兰文杰.微流控法制备有机-无机纳米复合微球[EB/OL].(2011-03-03)[2025-08-10].http://www.paper.edu.cn/releasepaper/content/201103-157.点此复制
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