物理化学学报 >> 1998, Vol. 14 >> Issue (02): 136-141.doi: 10.3866/PKU.WHXB19980208

研究论文 上一篇    下一篇

界面现象与液滴聚并

胡学铮, 陈烨璞, 倪邦庆, 虞学俊   

  1. 无锡轻工业大学化学工程系，无锡 214036
  • 收稿日期:1997-04-29 修回日期:1997-06-17 发布日期:1998-02-15
  • 通讯作者:

Interfacial Phenomenon and Coalescence

Hu Xue-Zheng, Chen Ye-Pu, Ni Bang-Qing, Yu Xue-Jun   

  1. Department of Chemical Engineering,Wuxi University of Light Industry,Wuxi 214036
  • Received:1997-04-29 Revised:1997-06-17 Published:1998-02-15
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摘要：

报导了一个受溶质Marangoni效应影响的液滴聚结的迟缓现象．采用示踪液滴法，对滴加在正戊醇水溶液表面、受自发界而流控制的硝基乙烷液滴的运动和存在状态进行了研究．结果显示，在一定体系中溶质Marangoni效应可导致液滴的悬浮态，并对液滴的聚并产生显著影响．由于界面状态的不同，示踪液滴也表现出完全不同的动力学特征．基于以上认识对液滴运动速率的计算得到了合理的结果．

关键词: 溶质Marangoni效应, 液滴聚并, 界面流

Abstract:

 A study of retardation of the coalescenec of a small liquid drop effected by the solute Marangoni effect is presented. The state and movement of the nitroethane drop deposited on the surface of an aqueous solution of 1-pentanol and affected by the self-induced interfacial flux are studied experimentally. It is shown that in certain system the solute Marangoni effect can induce a suspending state of the drop at the plane surface of an aqueous solution and effect appreciably the coalescence process of the drop ,and the movement of the drop caused by the interfacial flux presents quite different dynamic properties according to the different state of the drop at the surface. The calculation of the velocity of the drop motion on this consistent is in consistent with the experimental data.

Key words: Marangoni effect, Coalescence, Interfacial flux