Next Article in Journal
Fuzzy Based Risk Assessment for Decommissioning Concrete Bioshield Structures in Nuclear Power Plants: Structural Risks and Worker Safety
Previous Article in Journal
Nanofocusing Optics for an X-Ray Free-Electron Laser Generating an Extreme Intensity of 100 EW/cm2 Using Total Reflection Mirrors
 
 
Article

Surface Functionalization of Polyethylene by Silicon Nitride Laser Cladding

1
Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
2
Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, 465 Kajii-cho, Kawaramachi dori, Kyoto 602-0841, Japan
3
Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
4
SINTX Technologies Corporation, 1885 West 2100 South, Salt Lake City, UT 84119, USA
5
Shinsei, Co., Shijohei Kawanishi Rikobo, Kyoto 610-0101, Japan
6
Department of Orthopedic Surgery, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo 160-0023, Japan
7
The Center for Advanced Medical Engineering and Informatics, Osaka University, Yamadaoka, Suita, Osaka 565-0871, Japan
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(7), 2612; https://doi.org/10.3390/app10072612
Received: 18 March 2020 / Revised: 30 March 2020 / Accepted: 1 April 2020 / Published: 10 April 2020
(This article belongs to the Section Materials Science and Engineering)
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. View Full-Text
Keywords: laser cladding; polyethylene; silicon nitride; antibacterial; osteointegration laser cladding; polyethylene; silicon nitride; antibacterial; osteointegration
Show Figures

Graphical abstract

MDPI and ACS Style

Zanocco, M.; Marin, E.; Boschetto, F.; Adachi, T.; Yamamoto, T.; Kanamura, N.; Zhu, W.; McEntire, B.J.; Bal, B.S.; Ashida, R.; Mazda, O.; Pezzotti, G. Surface Functionalization of Polyethylene by Silicon Nitride Laser Cladding. Appl. Sci. 2020, 10, 2612. https://doi.org/10.3390/app10072612

AMA Style

Zanocco M, Marin E, Boschetto F, Adachi T, Yamamoto T, Kanamura N, Zhu W, McEntire BJ, Bal BS, Ashida R, Mazda O, Pezzotti G. Surface Functionalization of Polyethylene by Silicon Nitride Laser Cladding. Applied Sciences. 2020; 10(7):2612. https://doi.org/10.3390/app10072612

Chicago/Turabian Style

Zanocco, Matteo, Elia Marin, Francesco Boschetto, Tetsuya Adachi, Toshiro Yamamoto, Narisato Kanamura, Wenliang Zhu, Bryan J. McEntire, B. Sonny Bal, Ryutaro Ashida, Osam Mazda, and Giuseppe Pezzotti. 2020. "Surface Functionalization of Polyethylene by Silicon Nitride Laser Cladding" Applied Sciences 10, no. 7: 2612. https://doi.org/10.3390/app10072612

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop