Review of Developed Methods for Measuring Gas Uptake and Diffusivity in Polymers Enriched by Pure Gas under High...

Area of Science:

• Materials Science
• Chemical Engineering
• Polymer Science

Background:

• Gas permeation in polymers is vital for industrial safety and monitoring.
• Investigating O-ring material gas permeation is critical for hydrogen infrastructure sealing.
• Understanding gas transport properties is essential for high-pressure applications.

Purpose of the Study:

• To develop and validate four complementary methods for measuring gas absorption and diffusivity in polymers.
• To assess the gas permeation characteristics of O-ring materials for hydrogen sealing applications.
• To compare the principles, procedures, results, and characteristics of the developed methods.

Main Methods:

• Gravimetric method (mass-based)
• Volumetric method (volume-based)
• Manometric method (pressure-based)
• Gas chromatography (volume-based)

Main Results:

• Demonstration of gas uptake, solubility, and diffusivity measurements using the developed methods.
• Comparative analysis of the four methods regarding their principles, procedures, and results.
• Validation of the methods for assessing transport properties of rubber and O-ring materials.

Conclusions:

• The developed methods provide effective means for measuring gas transport properties in polymers.
• These techniques are suitable for evaluating the sealing and leakage abilities of O-ring materials under high pressure.
• The methods support the safety and reliability requirements of hydrogen fueling stations and the gas industry.