基于微纳流控技术的流体相态特性研究进展

Progress in studying fluid phase behaviours with micro-and nano-fluidic technology

微纳流控技术是在微纳米尺度下研究并检测流体的作用和性质,具有可视化和快速精准等技术优势。在化工热力学研究中,近二十年来逐渐兴起了基于微纳流控技术的流体相态特性研究。详细阐述了微纳流控技术在流体相态特性领域的研究进展,重点总结了基于微纳流控技术的流体物质相态特性研究的各个领域,主要涵盖了蛋白质、聚合物、表面活性剂与盐,以及工业气体与石油天然气。其中,基于微流控技术的流体相态特性检测分析手段,成功地弥补了传统"压强-体积-温度"(pressure-volume-temperature, PVT)方法中样本体量大、传质传热慢、耗时长和高温高压高危险性等缺点,因而具有很强的实用导向性;纳流控技术则以研究纳米尺度下特有的流体相态特性为主要目标,因而具有重要的科学意义和应用价值。同时展望了微纳流控技术在流体相态特性领域研究的发展前景。

Microfluidics and nanofluidics investigates fluid behaviours and measures fluid properties in micro-and nano-scale,offering unique advantages of visualization,high speed and high accuracy.The recent two decades witnesses the boom of micro-and nano-fluidic technology in fluid phase behaviour studies.In this paper,we provide a comprehensive review of recent progress in studying fluid phase behaviours using micro-and nano-fluidic technology.Specifically,we focus on the research progress in phase behaviours of protein,polymer,surfactant and salt,industrial gas,and oil and gas.Microfluidic methods are mostly developed for practical purposes to compete with conventional PVT(pressure-volume-temperature)method,which suffers a series of deficiencies such as sample-and time-consuming,slow heat and mass transfer,and safety concerns associated with large sample volume.On the other hand,nanofluidic methods focus on uncovering fundamentals of nano-confinement effect on fluid phase behaviours,which exhibits high significance in science merits.At the same time,the development prospect of micro-nano flow control technology in the field of fluid phase characteristics is prospected.