Technical Information Magazine 202304-03 Selective Measurement of Nanopore Diameter in Separation Membranes
This paper introduces the mercury intrusion method as a technique capable of selectively evaluating the nanopore diameter of functional layers, through an overview of the method and comparisons with existing techniques.
The technical information magazine The TRC News provides the latest information on analytical techniques that are useful for research and development, solving production troubles, and quality control. **Abstract** In achieving a sustainable society, the development of energy-efficient and low-cost separation and purification technologies using membranes with excellent permeability is expected in various fields such as energy, semiconductors, and healthcare. Since the permeability of membranes is governed by their pore structure, techniques for evaluating advanced pore structures become crucial. Here, we introduce an overview of the mercury permeation method developed independently by the Toray Research Center, along with comparative examples with existing methods, demonstrating that the mercury permeation method is capable of selectively evaluating the nano pore diameter of functional layers. **Table of Contents** 1. Introduction 2. Overview of the Mercury Permeation Method 3. Case Studies Applying the Mercury Permeation Method 4. Conclusion
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