Electrostatic charge on spray droplets of aqueous surfactant solutions
Electrostatic charge on spray droplets of aqueous surfactant solutions
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DOI：
10.1016/s0021-8502(99)00542-x
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发表时间：
2000-05-01
影响因子：
4.5
通讯作者：
Chander, S
中科院分区：
文献类型：
--
作者：
Polat, M;Polat, H;Chander, S
使用密立根油滴法的改进形式测量单个喷雾液滴上的静电荷。测量系统由三个主要部分组成；液滴发生池、沉降柱和电荷测量室。使用与长焦距显微镜耦合的高速运动分析仪确定计算电荷所需的轨迹。通过在喷雾溶液中添加表面活性剂来控制液滴上的电荷。液滴电荷是所添加的表面活性剂的类型和浓度的函数。对于离子型表面活性剂，它在低表面活性剂浓度下表现出最大值，随着表面活性剂的进一步添加而降低，并且在 CMC 后保持恒定。阳离子表面活性剂上的电荷总是大于阴离子表面活性剂上观察到的电荷。非离子表面活性剂的液滴电荷随着浓度的增加而稳定增加。与离子表面活性剂相比，电荷更重。 (C) 2000 Elsevier Science Ltd. 保留所有权利。
Electrostatic charges on individual spray droplets were measured using a refined form of the Millikan oil drop method. The measurement system consisted of three main sections; a droplet generation cell, a settling column and a charge measurement chamber. The trajectories required for calculation of charge were determined using a high-speed motion analyzer coupled to a long-focal-length microscope. Charges on droplets were manipulated by the addition of surface-active agents into the spray solution. Droplet charge was a function of the type and concentration of the surfactant added. For ionic surfactants, it showed a maximum at low surfactant concentrations, decreased with further surfactant addition and was constant after the CMC. The charge on cationic surfactants was always more than that observed with the anionic surfactants. Nonionic surfactants displayed a steady increase in droplet charge with increasing concentration. The charges were levier compared to the ionic surfactants. (C) 2000 Elsevier Science Ltd. All rights reserved.