Measurement of Transient Transport Process of Different Molecules Across Mixed Fiber (CA-CN) Membrane by Pixelated-Array Masked Phase-Shifting Interferometer
Measurement of Transient Transport Process of Different Molecules Across Mixed Fiber (CA-CN) Membrane by Pixelated-Array Masked Phase-Shifting Interferometer
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DOI：
10.1016/j.expthermflusci.2021.110490
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发表时间：
2021-07
影响因子：
3.2
通讯作者：
Lin Chen;Qiaoge Zhang;Qixian Wu;Dong-Keun Yang;G. Zeng;Yizhi Zhang;A. Komiya
中科院分区：
文献类型：
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作者：
Lin Chen;Qiaoge Zhang;Qixian Wu;Dong-Keun Yang;G. Zeng;Yizhi Zhang;A. Komiya
定量分析不同分子的跨膜和扩散输运过程对于理解生物过程的分子机理以及工业膜工程具有重要意义。跨膜系统中分子传质过程的精确测量和可视化是这类分析的关键问题。在这项研究中，可视化表征进行了实验分析的交叉混合纤维（CA-CN）膜过程中，新提出的像素阵列掩模相移干涉仪系统。混合纤维（CA-CN）膜具有1.2 μm、0.8 μm、0.45 μm和0.2 μm四种不同的平均微孔直径。通过分析模型来检查跨膜和膜后扩散过程，然后通过比较这种非接触可视化方法概括的条纹来通过干涉仪测量来实现。结果发现，局部特征将主导跨膜转运过程，随后的扩散过程将在很大程度上取决于局部转运：对于氯化钠，局部平衡很快发生，但垂直对流在水平方向上也表现出不同的速度，而对于甘油和BSA，（牛血清白蛋白）溶液体系中，跨膜过程和扩散过程表现出明显不同的行为，表明可能存在膜传递的控制过程。
The quantitative analysis of cross-membrane and diffusion transportation process of different molecules is of critical importance for the understanding of molecular mechanism of bio-process as well as industrial membrane engineering. Precise measurement and visualization of such molecular mass transfer process in cross-membrane system are the key issues in such analysis. In this study, the visualizing characterization was conducted to experimentally analyze the cross mixed fiber (CA-CN) membrane process by a newly proposed Pixelated-Array Masked Phase-Shifting Interferometer system. The mixed fiber (CA-CN) membrane is with four different average micro-hole diameter of 1.2 μm, 0.8 μm, 0.45 μm and 0.2 μm. Both the cross-membrane and after-membrane diffusion process were examined by analytical model and then realized by interferometer measurement by comparing the fringes generalized by this non-contact visualization method. It was found that the localized feature will dominant the cross-membrane transportation process and the ensuing diffusion process will largely be dependent on the localized transportation: for the case of sodium chloride, local equilibrium happen very quickly but the vertical convection also show different speed in the horizontal direction, while for glycerin, and BSA (bovine serum albumin) solution system, the cross-membrane and diffusion process show much different behaviors, which indicates possible control process for membrane transportation.