Outstanding stability of particle-stabilized bubbles
Outstanding stability of particle-stabilized bubbles
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DOI：
10.1021/la034042n
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发表时间：
2003-04-15
期刊：
影响因子：
3.9
通讯作者：
Murray, BS
中科院分区：
文献类型：
--
作者：
Du, ZP;Bilbao-Montoya, MP;Murray, BS
方法已被用来产生一个平面的空气-水界面下的气泡，稳定的部分疏水性准球形二氧化硅颗粒（初级直径为20 nm）在纯水中。粒子在平面界面上容易聚集，所有的二氧化硅分散体都具有低发泡性。然而，所形成的那些气泡（半径为5-200 μ m）对于起泡几天是完全稳定的，这与由最好的蛋白质泡沫稳定剂稳定的类似气泡形成对比，所述最好的蛋白质泡沫稳定剂通常在1或2小时内收缩并消失。
Methods have been used to generate air bubbles beneath a planar air-water interface, stabilized by partially hydrophobic quasi-spherical silica particles (primary diameter of 20 nm) in pure water. Particles tended to aggregate at the planar interface, and all the silica dispersions had low foamability. However, those bubbles that were formed (with radii of 5-200 mum) were completely stable to disproportionation for several days, in contrast to similar bubbles stabilized by the best protein foam stabilizers, which typically shrank and disappeared in 1 or 2 h.