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Surface modification of narra wood (Pterocarpus indicus) by ion shower treatment

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Date
2006-10-24
Author
Blantocas, Gene Q.
Ramos, Henry ORCID
Wada, Motoi ORCID
Taxonomic term
Pterocarpus indicus GBIF
Metadata
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Abstract
A gas discharge ion source (GDIS) was used as test facility to produce and study the characteristics of diffused, low-energy hydrogen ion showers. Narra wood samples were then exposed to the showers to investigate topographical effects of ion irradiation. Analysis of beam constituents by mass spectroscopy shows H+ ions to be the dominant species suggesting an essential participatory role for this particular monatomic ion in the surface modification process. Low energy irradiation (600-700eV) produced hydrophobic surfaces with scanning electron micrographs showing partial closure of surface pores. Whereas, a reversion to hydrophilicity was observed for higher energy irradiation (>900 eV), with surface images showing exterior degradation believed to be the etching effects of the chemically active H+ species. The irradiated samples absorbency was quantified via the wetting model wherein the contact angle's time rate equation was numerically solved and fitted onto experimental data. The change rate proportionality constant K with value 0.0015 corresponding to 600 eV beam energy, exhibited the longest moisture absorptive inhibition time of more than 10 min. An increasing value of K indicates increased wetting behavior.
URI
https://hdl.handle.net/20.500.14353/426
Recommended Citation
Blantocas, G. Q., Ramos, H., & Wada, M. (2006). Surface modification of narra wood (Pterocarpus indicus) by ion shower treatment. Japanese Journal of Applied Physics, 45(10S), 8498-8501.
DOI
10.1143/JJAP.45.8498
Type
Article
ISSN
214922
Keywords
Hydrophilicity Hydrophobicity Wettability Wetting model Surface modification Narra wood Ion shower treatment Gas discharge ion sources Mass spectroscopy Ion irradiation Topographical effect Low energy irradiation High energy irradiation Diffused, low energy hydrogen ion shower
Subject
Plasma (Ionized gases) OCLC - FAST (Faceted Application of Subject Terminology) Mass spectrometry OCLC - FAST (Faceted Application of Subject Terminology)
Collections
  • Journal articles published externally [121]
  • Scholarly and Creative Works of Faculty Members and Researchers [14]

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