Modification of hydroxyapatite surface properties by electron irradiation

In the present work, the modification of wetting properties of EB irradiated HA ceramics are studied under air and N2 gas atmospheres. We show a noticeable increase of the hydrophily of electron irradiated HA ceramics in an air gas atmosphere and a lesser increase when the samples are irradiated in...

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Bibliographic Details
Published inRadiation physics and chemistry (Oxford, England : 1993) Vol. 177; p. 109192
Main Authors Bai, Guillaume, Hornez, Jean-Christophe, Maschke, Ulrich, Supiot, Phillipe, Brès, Étienne
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.12.2020
Elsevier BV
Elsevier
SeriesRadiation Physics and Chemistry
Subjects
Ceramics
Chemical elements
Chemical Sciences
Electron irradiation
Hydroxyapatite
Material chemistry
Morphology
Polymers
Properties (attributes)
Surface functionalisation
Surface modification
Surface properties
Surface wettability
Wetting
Surface modification
Surface functionalisation
Surface wettability
Hydroxyapatite
Electron irradiation
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Summary:In the present work, the modification of wetting properties of EB irradiated HA ceramics are studied under air and N2 gas atmospheres. We show a noticeable increase of the hydrophily of electron irradiated HA ceramics in an air gas atmosphere and a lesser increase when the samples are irradiated in an N2 atmosphere, such a phenomenon is correlated to a modification of grain morphology obtained under the 2 atm. With a progressive water saturation of the ceramics, the wetting angles increase progressively until they reach plateau values different from each set of samples (irradiated under air, irradiated under N2 atmosphere and pristine). Profilometry, SEM/EDX, XRD and Raman spectrometry analysis do not show differences between irradiated and pristine samples which indicates that the EB irradiation modifies the surface chemical elements related to the surface wetting properties and not those analysed by the above techniques. [Display omitted] •Surface functionalisation by electron beam without chemical additives.•Evolution of contact angles by cumulative time of contact between a water drop and surfaces.•Wettability modification without surface and chemical modifications.
ISSN:0969-806X
1879-0895
DOI:10.1016/j.radphyschem.2020.109192