Uploaded October 2025 | Updated September 2026, 1 week ago
Dr Bernadette Craster (FIMMM), TWI Technology Fellow (Polymeric Materials and Ageing through Permeation Processes), presents on the permeation of carbon dioxide or hydrogen into elastomers.
Bernadette’s presentation showcases the state of the art in integrity assessment of elastomers for the energy transition.
Because the supply of CO2 or H2 may be in anything from a gaseous to a liquid phase, and as it is not always possible for the end user to know the original and current chemical composition of an elastomer, it can create uncertainty for lifetime extension.
The presentation introduces methods for the exposure of sheet and O-ring elastomers such as hydrogenated nitrile butadiene rubber, nitrile butadiene rubber, and fluoroelastomer to supercritical CO2, as well as the assessment of the materials for weight gain, swelling, barrier performance, mechanical properties, and trapped CO2. Suggestions are made for control of the boundary conditions, especially where impurities are present. Damage mechanisms from rapid gas decompression processes are also shown. Parallels are then drawn with data in the literature for the alteration in elastomers on exposure to hydrogen before suggestions for further study areas are outlined.
#TechnicalExcellence #Hydrogen #CarbonDioxide #Elastomers
Dr Bernadette Craster (FIMMM), TWI Technology Fellow (Polymeric Materials and Ageing through Permeation Processes), presents on the permeation of carbon dioxide or hydrogen into elastomers.
Bernadette’s presentation showcases the state of the art in integrity assessment of elastomers for the energy transition.
Because the supply of CO2 or H2 may be in anything from a gaseous to a liquid phase, and as it is not always possible for the end user to know the original and current chemical composition of an elastomer, it can create uncertainty for lifetime extension.
The presentation introduces methods for the exposure of sheet and O-ring elastomers such as hydrogenated nitrile butadiene rubber, nitrile butadiene rubber, and fluoroelastomer to supercritical CO2, as well as the assessment of the materials for weight gain, swelling, barrier performance, mechanical properties, and trapped CO2. Suggestions are made for control of the boundary conditions, especially where impurities are present. Damage mechanisms from rapid gas decompression processes are also shown. Parallels are then drawn with data in the literature for the alteration in elastomers on exposure to hydrogen before suggestions for further study areas are outlined.
#TechnicalExcellence #Hydrogen #CarbonDioxide #Elastomers
