ArticlePolymers2019
A Phenomenological Approach to Study Mechanical Properties of Polymeric Porous Structures Processed Using Supercritical CO₂.
Article in Polymers, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Implantable Polymer-Based Medical Devices Go Supercritical: From Cleaning to Sterilization.Annals of biomedical engineering · 2026Review
- Sterilization of Polymeric Implants: Challenges and Opportunities.ACS applied bio materials · 2022Review
- Production of Porous Agarose-Based Structures: Freeze-Drying vs. Supercritical COGels (Basel, Switzerland) · 2021Article
- Extreme Foaming Modes for SCF-Plasticized Polylactides: Quasi-Adiabatic and Quasi-Isothermal Foam Expansion.Polymers · 2020Article
- Aerogels from Cellulose Phosphates of Low Degree of Substitution: A TBAF·HMolecules (Basel, Switzerland) · 2020Article
- Supercritical Fluid Processing of Polymers.Polymers · 2019Article
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Authors and funding
5 authors.
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Abstract
This work proposes a modeling of the mechanical properties of porous polymers processed by scCO₂, using a phenomenological approach. Tensile and compression tests of alginate/gelatin and cellulose acetate/graphene oxide were modeled using three hyperelastic equations, derived from strain energy functions. The proposed hyperelastic equations provide a fair good fit for mechanical behavior of the nanofibrous system alginate/gelatin (deviations lower than 10%); whereas, due to the presence of the solid in the polymer network, a four-parameter model must be used to fit the composite cellulose acetate/graphene oxide behavior. Larger deviations from the experimental data were observed for the system cellulose acetate/graphene oxide because of its microporous structure. A finite element method was, then, proposed to model both systems; it allowed a realistic description of observable displacements and effective stresses. The results indicate that materials processed using scCO₂, when submitted to large stresses, do not obey Hooke´s law and must be considered as hyperelastic.
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