Dynamic mechanical characterization of poly(glycerol sebacate)/poly(butylene succinate-butylene dilinoleate) blends for cardiac tissue engineering by flat punch nanoindentation
| Autor: | Katerina E. Aifantis, M. El Fray, Marwa Tallawi, X. Kraus, Mathias Göken, B. Scharfe, Aldo R. Boccaccini, Benoit Merle |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Mechanical Engineering 02 engineering and technology Dynamic mechanical analysis Nanoindentation 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Viscoelasticity 0104 chemical sciences Polybutylene succinate chemistry.chemical_compound chemistry Mechanics of Materials Copolymer Glycerol General Materials Science Polymer blend Composite material 0210 nano-technology Tensile testing |
| Zdroj: | Materials Letters. 221:115-118 |
| ISSN: | 0167-577X |
| Popis: | The viscoelastic properties of polymer blends of poly(glycerol sebacate) (PGS) and poly(butylene succinate-dilinoleate) (PBS-DLA) copolymer intended for cardiac tissue patches are investigated by dynamic flat punch nanoindentation at frequencies ranging from 1 to 45 Hz. The storage modulus is found to depend weakly on the testing frequency, the lowest value being for 1 Hz, which corresponds to the usual heart rate. More significantly, it is found that varying the PGS content between 40 and 70 wt% allows tuning the storage modulus of the blends between 11 and 39 MPa. The reliability of the nanoindentation method is validated by reference dynamic mechanical measurements on thicker PBS-DLA samples using a tensile testing machine. |
| Databáze: | OpenAIRE |
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