Evaluation of Effective Interfacial Tension between Miscible Fluids using Spinning Drop Tensiometry and Microfluidics

南密西西比大学的John Pojman获得了理论和计算化学项目的一项奖励，以开展对可混溶流体之间有效界面张力评估的实验和理论方法发展的研究。 这样的界面代表了一个复杂的非平衡系统，人们对此知之甚少。 还没有人研究过这个界面的物理完整性，Pojman正在应用一种称为旋转液滴张力测量法的技术来研究这个问题。 这种方法以前已被应用于测量高分子量聚合物溶液的性能和Pojman已经提出了初步的结果，证明了该方法在这种新的情况下使用的可行性。 这项工作正在南密西西比大学进行，并通过来自密西西比地区的一些非洲裔美国学生的参与产生了更广泛的影响。 PI一直非常积极地招聘，保留和安置这些学生在毕业后的工业和学术职位。

John Pojman of the University of Southern Mississippi is supported by an award from the Theoretical and Computational Chemistry program to carry out research on the development of experimental and theoretical methods for the evaluation of an effective interfacial tension between miscible fluids. Such interfaces represent a complex nonequilibrium system and are poorly understood. No one has yet studied the physical integrity of this interface, and Pojman is applying a technique known as spinning drop tensiometry to the study of this problem. This method has been previously applied to the measurement of high molecular weight polymer solution properties and Pojman has presented preliminary results demonstrating the feasibility of the method for use in this new situation. The work is being carried out at the University of Southern Mississippi and is having a broader impact through the participation of a number of African-American students from the Mississippi area. The PI has been quite active in recruiting, retaining and placing these students in industrial and academic positions upon graduation.