Synthesis and Production of Polyimide Fine Beads by the Use of Micro-flow-mixing Technique

摘要

Fine polyimide beads were obtained by thermal dehydration reaction of fine poly(amic acid) beads, which were prepared by mixing tetracarboxylic acid dianhydride solution with diamine solution using micro-flow-mixing devices. The diameter of these beads, which could be controlled from submicron to several microns, had a coefficient of variation less than 10%.