| Autor: |
Matteo Zanocco, Elia Marin, Francesco Boschetto, Tetsuya Adachi, Toshiro Yamamoto, Narisato Kanamura, Wenliang Zhu, Bryan J. McEntire, B. Sonny Bal, Ryutaro Ashida, Osam Mazda, Giuseppe Pezzotti |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Applied Sciences, Vol 10, Iss 7, p 2612 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2076-3417 |
| DOI: |
10.3390/app10072612 |
| Popis: |
Functional coatings are commonly applied to biomaterials in order to improve their properties. In this work, polyethylene was coated with a silicon nitride (Si3N4) powder using a pulsed laser source in a nitrogen gas atmosphere. Several analytical techniques were used to characterize the functionalized surface of the polymer, including Raman spectroscopy, laser microscopy, scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). Antibacterial properties were tested in vitro against Staphylococcus epidermidis. The Si3N4 coating sensibly reduced the amount of living bacteria when compared to the uncoated polymer. Osteoconductivity was also tested in vitro using SaOS-2 osteosarcoma cells. The presence of Si3N4 coating resulted in an increased amount of hydroxyapatite. Coating of polyethylene with silicon nitride may lead to improved performance of indwelling orthopaedic or less invasive medical devices. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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