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Adsorption of catechol and comparative solutes on hydroxyapatite
Author(s) -
Chirdon William M.,
O'Brien William J.,
Robertson Richard E.
Publication year - 2003
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.10041
Subject(s) - catechol , adsorption , chemistry , aqueous solution , adhesive , molecule , adhesion , langmuir , organic chemistry , surface tension , chemical engineering , inorganic chemistry , polymer chemistry , thermodynamics , layer (electronics) , physics , engineering
Contemporary medical and dental adhesives often have difficulty sticking to wet surfaces or weaken with long‐term exposure to water. Substantial research has been dedicated to finding a means of achieving adhesion in an aqueous environment. A study evaluates the adsorption of catechol relative to other chemical groups as means of gauging how effective they may be as adsorptive groups in adhesives. Contact angle and surface‐tension measurements of solutions of catechols and other chemical groups were used to determine their works of adhesion. Adsorption isotherms were also constructed to ascertain Langmuir constants. Solutes containing catechol groups were compared to solutes containing other polar groups to see how well catechol adsorbs to hydroxyapatite, the mineral component of bones and teeth, relative to other chemical groups found in adhesives. The results of this study show that catechol and molecules containing catechol groups have higher rates and energies of adsorption to hydroxyapatite than do groups such as alcohols, amines, and carboxylic acids. © 2003 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 66B: 532–538, 2003