Facile fabrication of colloidal particles based on the electrostatic aggregation of block copolymer micelles
Facile fabrication of colloidal particles based on the electrostatic aggregation of block copolymer micelles
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DOI：
10.1016/j.cej.2010.08.035
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发表时间：
2010-11
影响因子：
15.1
通讯作者：
Jinkee Hong;S. Kang
中科院分区：
文献类型：
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作者：
Jinkee Hong;S. Kang
通过静电相互作用，阳离子聚苯乙烯-嵌段-聚（4-乙烯基吡啶）（PS-b-P4 VP）和阴离子聚苯乙烯-嵌段-聚（丙烯酸）（PS-b-PAA）一锅法成功制备了嵌段共聚物组装胶体粒子。通过简单混合互补电荷嵌段共聚物胶束水溶液制备胶体颗粒。该方法提供了非常简单和通用的大规模生产基于胶体颗粒的方法的可能性。通过场发射扫描电子显微镜（FE-SEM）证实，毛状和平头型嵌段共聚物胶束（BCMs）显示出不同的静电组装倾向。这些现象主要是由于胶束的质子化和去质子化电晕区之间存在不同程度的静电相互作用和缠结所引起的。
Block copolymer assembled colloidal particles were successfully prepared through electrostatic interactions between cationic polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) and anionic polystyrene-block-poly(acrylic acid) (PS-b-PAA) in a one-pot process. The colloidal particles were prepared by simple mixing of complementary charged block copolymer micelle aqueous solution. This process presents the possibility of very simple and versatile method of mass production of BCM based colloidal particles. Both hairy and crew-cut types of block copolymer micelles (BCMs) showed different electrostatic assembly tendencies as confirmed by Field emission scanning electron microscopy (FE-SEM). These phenomena are mainly caused by the different degrees of electrostatic interdigitation and entanglement between the protonated and deprotonated corona block regions of the micelles.