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The Effect of the Ionizing Radiation on Hydroxyapatite–Polydimethylsiloxane Layers
Author(s) -
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
Publication year - 2019
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.25247
Subject(s) - polydimethylsiloxane , materials science , fourier transform infrared spectroscopy , scanning electron microscope , irradiation , composite number , composite material , ionizing radiation , surface modification , chemical engineering , physics , nuclear physics , engineering
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