Platelet Janus particles with hairy polymer shells for multifunctional materials.
Platelet Janus particles with hairy polymer shells for multifunctional materials.
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DOI：
10.1021/am502973y
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发表时间：
2014-08
影响因子：
9.5
通讯作者：
A. Kirillova;Georgi V Stoychev;L. Ionov;K. Eichhorn;M. Malanin;A. Synytska
中科院分区：
文献类型：
--
作者：
A. Kirillova;Georgi V Stoychev;L. Ionov;K. Eichhorn;M. Malanin;A. Synytska
开发了一种新的方法，用于大规模合成Janus颗粒与血小板的几何形状和致密的聚合物壳通过采用同时“接枝”的亲水性和疏水性聚合物使用表面诱导ATRP在乳液中。该方法基于由亲水性单体的水溶液和疏水性单体在有机溶剂中的溶液组成的乳液的制造，其通过引发剂改性的高岭土颗粒稳定。在聚合过程中，两种聚合物同时接枝在高岭石颗粒的相对面上。所合成的粒子具有明显的Janus特征，并且对于乳液的稳定是高效的。由于其简单性，该方法可以很容易地扩大规模，用于合成大量的Janus粒子，高达几克。
A novel approach is developed for the large-scale synthesis of Janus particles with platelet geometry and dense polymer shells by employing simultaneous "grafting from" of hydrophilic and hydrophobic polymers using surface-induced ATRP in emulsion. The method is based on the fabrication of an emulsion consisting of a water solution of a hydrophilic monomer and a solution of a hydrophobic monomer in an organic solvent, which is stabilized by initiator-modified kaolinite particles. Two polymers are grafted simultaneously on the opposite faces of the kaolinite particle during polymerization. The synthesized particles have a clear Janus character and are highly efficient for the stabilization of emulsions. Because of its simplicity, the method can readily be upscaled for the synthesis of large amounts of Janus particles, up to several grams.