A pycnometric method to estimate the porosity of hydrophobic hollow fiber membranes

IF 1.6 Q2 MULTIDISCIPLINARY SCIENCES

MethodsX Pub Date : 2024-08-02 DOI:10.1016/j.mex.2024.102882

Pedro Arana-Agudelo, Ioan-Cristian Trelea, Kevin Lachin, Violaine Athès, Marwen Moussa

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Abstract

The porosity of hollow fiber membranes is an important property in the design of processes implementing membrane contactors as it is directly related to the effective surface available for mass transfer. Nevertheless, measuring the porosity requires most of the time complex experimental setup and some of the existing methods are questionable when applied to polymeric membrane materials. In this work, we adapted a method originally proposed to estimate the porosity of flat membranes, in order to estimate the porosity of hollow fiber membranes.

•
Some hydrophobic hollow fibers are put in contact with a non-wetting solvent inside a pycnometer. The mass of the system is measured.
•
The process is repeated using a wetting solvent.
•
The porosity is deduced from the difference between the weighing data.

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估算疏水中空纤维膜孔隙率的 pycnometric 方法

中空纤维膜的孔隙率是设计膜接触器过程中的一个重要特性，因为它与可用于传质的有效表面直接相关。然而，测量孔隙率大多需要复杂的实验装置，而且一些现有方法在应用于聚合物膜材料时存在问题。在这项工作中，我们采用了一种最初为估算平膜孔隙率而提出的方法，以估算中空纤维膜的孔隙率。测量系统的质量，使用润湿溶剂重复该过程，根据称重数据之间的差值推断孔隙率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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