Experimental determination and modelling of the swelling speed of a hydrogel polymer
| Autor: | Ferenc Ujhelyi, Sándor Lenk, Attila Barócsi, Tamás Majoros, Szabolcs Beleznai, Imre Péczeli, Zsolt Karda |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Polymers and Plastics Scale (ratio) 02 engineering and technology Biomaterials 03 medical and health sciences 0302 clinical medicine medicine Temporal change Composite material Diffusion (business) Physics::Atmospheric and Oceanic Physics chemistry.chemical_classification Metals and Alloys Polymer 021001 nanoscience & nanotechnology Finite element method Surfaces Coatings and Films Electronic Optical and Magnetic Materials Condensed Matter::Soft Condensed Matter Distilled water chemistry Volume (thermodynamics) 030221 ophthalmology & optometry Swelling medicine.symptom 0210 nano-technology |
| Zdroj: | Materials Research Express. 5:035302 |
| ISSN: | 2053-1591 |
| DOI: | 10.1088/2053-1591/aab069 |
| Popis: | When a hydrophilic intraocular lens material is immersed, its volume and mass start increase due to the diffusion of water (or isotonic saline solution) reaching a quasi-equilibrium in a time scale of several hours. Here, we present a combination of atomic force and confocal microscopy to measure the axial swelling speed of such polymers in distilled water. The measurements are used for the experimental verification of a simplistic finite element model developed for engineering applications in COMSOL environment. The model is calibrated with the temporal change of the sample mass. The swelling velocity is found to be inversely proportional to the square root of time. |
| Databáze: | OpenAIRE |
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