Mechanically Reinforcing Polyacrylate/Polyacrylamide Hydrogels through the Addition of Colloidal Particles
Autor: | Bryan A. Baker, Valeria T. Milam, Rebecca Murff |
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Rok vydání: | 2009 |
Předmět: |
chemistry.chemical_classification
Polyacrylamide Hydrogel Materials science Polyacrylamide technology industry and agriculture Dynamic mechanical analysis Polymer complex mixtures chemistry.chemical_compound Electrophoresis chemistry Self-healing hydrogels Volume fraction Particle Composite material |
Zdroj: | MRS Proceedings. 1190 |
ISSN: | 1946-4274 0272-9172 |
DOI: | 10.1557/proc-1190-nn03-07 |
Popis: | Polyacrylamide is a popular material for many bio-related applications ranging from electrophoretic separation to cellular supports. A limitation of polyacrylamide-based hydrogels, however, is their mechanical compliance. The current study examines the effect of colloidal particles as a reinforcing filler phase to enhance the mechanical stiffness of polyacrylamide-polyacrylate hydrogels. Measurements with oscillatory rheology show that for a fixed polymer volume fraction, the presence of colloidal particles with various surface modifications generally results in an increase of the shear storage modulus of the hydrogel-particle composite. Interestingly, this study indicated that no discernable trends can be linked between the values of the shear storage modulus and the particle surface characteristics. |
Databáze: | OpenAIRE |
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