水溶性圆柱状聚合物/二氧化钛杂化纳米粒子的合成
Synthesis of water-dispersible cylindrical polymer/TiO2 hybrid nanoparticles
水溶性圆柱状聚合物/二氧化钛杂化纳米粒子的制备一直是个较大的难题。本文中，我们通过一锅法原子转移自由基聚合（ATRP）合成了一种功能性的三嵌段共聚物，聚（氧乙烯）-聚[2-（二甲基氨基）乙基甲基丙烯酸] -聚苯乙烯三嵌段共聚物（PEO-b-PDMA-b-PS）。PEO-b-PDMA-b-PS在甲醇/四氢呋喃混合液中可以自组装形成功能性的聚合物圆柱，亲水的PEO为外部的晕层，功能性的PDMA为中层的壳，疏水的PS为核。这些柱体进一步作为钛酸四丁酯（TBT）发生溶胶-凝胶反应的媒介，通过PDMA壳层的自催化作用，可以制备水溶液可分散的柱状聚合物/二氧化钛杂化纳米颗粒。我们的方法为合成水溶液可分散的柱状聚合物/二氧化钛杂化纳米颗粒提供了新的见解。
he preparation of water-soluble cylindricalpolymer/TiO2 hybrid nanoparticles is an important technical challenge. In this paper we synthesized a functional triblock copolymer, poly(ethylene oxide)-block-poly[2-(dimethylamino)ethyl methacrylate]-block-polystyrene (PEO-b-PDMA-b-PS) by one-pot atom transfer radical polymerization (ATRP). The PEO-b-PDMA-b-PS triblock copolymer can self-assemble into functional polymeric cylinders in ethanol/THF mixture, with hydrophilic PEO block as the outer coronas, the functional PDMA block as the middle shell and the hydrophobic PS as the core. The cylinders have been further used for mediation of sol-gel reactions of tetrabutyl titanate (TBT) to prepare water-dispersible cylindrical polymer/TiO2 hybrid nanoparticles by the self-catalysis of PDMA shell. Our method provide a new insight for synthesizing water-dispersible polymer/TiO2 hybrid nanoparticles.
肖杰、袁康、王方英凯、杜建忠、陈帅
高分子化合物工业有机化学工业材料科学
材料学嵌段共聚物自组装杂化纳米粒子
material scienceblock-copolymerself-assemblyhybrid nanoparticles
肖杰,袁康,王方英凯,杜建忠,陈帅.水溶性圆柱状聚合物/二氧化钛杂化纳米粒子的合成[EB/OL].(2015-11-26)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/201511-622.点此复制
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