三嵌段共聚物自组装法制备两亲性Janus粒子

发布时间：2018-06-10 04:07

  本文选题：三嵌段共聚物 + 自组装　； 参考：《染整技术》2016年07期

【摘要】：将系列三嵌段共聚物聚甲基丙烯酸叔丁酯-b-聚甲基丙烯酸肉桂酸乙酯-b-聚甲基丙烯酸二甲氨基乙酯(Pt BMA-b-PCEMA-b-PDMAEMA)在异丙醇中退火,随后将它们透析到水中自组装得到多隔段胶束,发现其形态与Pt BMA和PCEMA的体积分数有关,与PDMAEMA无关。在紫外光下对PCEMA嵌段进行交联,将交联后的胶束透析到四氢呋喃中,得到了具有表面活性的纳米级两亲性Janus粒子,可降低水的表面张力,且随溶液质量浓度的增加,表面张力逐渐减小,但是低质量浓度时不明显,0.1 g/L时较显著。
[Abstract]:A series of three block copolymer polymethyl poly (tert butyl methacrylate) -b- poly (methyl methacrylate) -b- polymethylamino ethyl methacrylate (Pt BMA-b-PCEMA-b-PDMAEMA) was annealed in isopropanol, and then they were dialysated into water by self assembly to get multiple septum micelles. It was found that the morphology was related to the volume fraction of Pt BMA and PCEMA, and PDMA. EMA has nothing to do with the cross-linking of PCEMA block under UV light. The crosslinked micelles are dialysed to tetrahydrofuran, and the surface activity of the nano two amphiphilic Janus particles can be obtained, which can reduce the surface tension of water. With the increase of the concentration of the solution, the surface tension decreases gradually, but the low mass concentration is not obvious, and the 0.1 g/L is more significant.
【作者单位】： 东华大学纺织面料技术教育部重点实验室;
【基金】：国家自然科学基金(21303013)
【分类号】：TS193.21
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本文编号：2001919