(169f) Hyperelastic Models for Studying Stress-Strain Curves of Processed Polymeric Systems with Supercritical CO2 Techniques
AIChE Annual Meeting
2019 AIChE Annual Meeting
Engineering Sciences and Fundamentals
Thermodynamic and Transport Properties Under Pressure I
Monday, November 11, 2019 - 2:10pm to 2:30pm
Therefore, this work studies the mechanical response of different microporous membranes (cellulose acetate-graphene oxide) and nanofibrous aerogels (alginate-gelatin) that were previously processed with supercritical carbon dioxide. Stress-strain curves were obtained with tensile and compression tests and the results were modeled with several hyperelastic equations. Modeling results (always with deviations less than 15%) indicated that hyperelasticity theory can be applied to this type of studies and that solids processed with supercritical CO2 behave as hyperelastic materials. Based on the previous results, an hyperelastic model (Ogden) was used to perform a finite element model that can be used to predict accurately the behavior of these type of solids for future applications.