Title: Analysis of chemical interaction of 4-MET with hydroxyapatite using XPS
Authors: Nagakane, Kouji
Yoshida, Yasuhiro ×
Hirata, Isao
Fukuda, Ryuichi
Nakayama, Youichi
Shirai, Kenichi
Ogawa, Tatsuyuki
Suzuki, Kazuomi
Van Meerbeek, Bart
Okazaki, Masayuki #
Issue Date: Dec-2006
Publisher: Japanese soc dental materials devices
Series Title: Dental materials journal vol:25 issue:4 pages:645-649
Abstract: Each dental adhesive contains a specific functional monomer that determines its actual adhesive performance to tooth tissue. 4-methacryloxyethyl trimellitic acid (4-MET) is well-known as one of the functional monomers mostly available and consequently widely used in commercial adhesives. We therefore characterized the chemical - interaction of 4-MET with hydroxy-apatite (HAp) using X-ray Photoelectron Spectroscopy (XPS). XPS revealed that the peak representing -COO- of 4-MET shifted to a lower binding energy, when 4-MET was adsorbed onto HAp. Deconvolution of this shifted peak disclosed two components with a peak representing unreacted carboxyl groups and ester groups, and a peak suggesting chemical bonding of other carboxyl groups to Ca of HAp. XPS spectra of HAp treated with 4-MET also disclosed the surface to be enriched in calcium and decreased in phosphorus, indicating that phosphorus was extracted at a, relatively higher rate than calcium. It can thus be concluded that true chemical bonding of 4-MET with calcium present in HAp occurred, as it was proven using XPS.
ISSN: 0287-4547
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Biomaterials - BIOMAT
× corresponding author
# (joint) last author

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