The Effect of the Ionizing Radiation on Hydroxyapatite–Polydimethylsiloxane Layers

The bio hydroxyapatite (HAp) was used from a long time in different medical and environmental applications. The HAp layers with a uniform surface were used for various medical applications such as orthopedic and dental metal implants. In this work, we reported on the influence of X‐ray radiation on...

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Bibliographic Details
Published in:Polymer engineering and science 2019-12, Vol.59 (12), p.2406-2412
Main Authors: Groza, Andreea, Iconaru, Simona Liliana, Jiga, Gabriel, Chapon, Patrick, Gaiaschi, Sofia, Verga, Nicolae, Beuran, Mircea, Prodan, Alina Mihaela, Matei, Mihai, Marinescu, Serban Andrei, Trusca, Roxana, Predoi, Daniela
Format: Article
Language:English
Subjects:
Antibacterial agents
Biological properties
Dental implants
Dental materials
Depletion
Dimethylpolysiloxane
Electron microscopy
Emission analysis
Fourier transforms
Glow discharges
Hydroxyapatite
Hydroxyapatites
Infrared spectroscopy
Ionizing radiation
Irradiation
Microscopy
Molecular structure
Morphology
Optical emission spectroscopy
Orthopedics
Polydimethylsiloxane
Polymers
Protective coatings
Radiation (Physics)
Scanning electron microscopy
Silicone resins
Spectroscopy
Spectrum analysis
Substrates
Surgical implants
Titanium
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Summary:The bio hydroxyapatite (HAp) was used from a long time in different medical and environmental applications. The HAp layers with a uniform surface were used for various medical applications such as orthopedic and dental metal implants. In this work, we reported on the influence of X‐ray radiation on the structural and morphological properties of composite layers based on HAp and polydimethylsiloxane (PDMS) deposited on titanium substrates. The HAp:PDMS layers were investigated by different complementary methods such as scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and glow discharge optical emission spectrometry (GDOES). FTIR spectral analysis showed that the molecular structure of the coatings was not changed after their irradiation even though, the depth profile analysis performed by GDOES indicated a depletion of Ca and P elements from the HAp:PDMS irradiated samples. By SEM, we showed that the morphological features of the coatings were also changed, as the irradiated layers are delaminated. The biological assays confirmed that the antibacterial activity of HAp:PDMS composite layers increased after irradiation. The results obtained in this study highlighted that the biological properties of HAp:PDMS layers could be influenced by irradiation. POLYM. ENG. SCI., 59:2406–2412, 2019. © 2019 Society of Plastics Engineers
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.25247