TY - JOUR
T1 - Fluoride ion binding and adsorption affinity of polyelectrolytes
AU - Rawls, H. Ralph
AU - Cabasso, Israel
AU - Zimmerman, Barbara F.
AU - Lescale, Keith B.
PY - 1987
Y1 - 1987
N2 - Poly (2,6-dimethyl-1,4-phenylene oxide) substituted with quaternary fluoride salts and phosphorous-containing pendent groups were prepared as pH 7 polyelectrolyte solutions. The ability of these polyelectrolytes to bind fluoride ions in solution and to adsorb onto calcium phosphate (hydroxyapatite) surfaces was studied as a function of the number and type of substituent groups. Fluoride binding was found to be enhanced by cross-linking, which maintains the polyelectrolyte in a compressed-coil conformation. Adsorption affinity and resistance to desorption were increased by the presence of phosphorous-containing groups, especially phosphonate esters. These factors will be important in designing polyelectrolytes to remove counter-ions from solution and concentrate them at surfaces for biomedical and industrial applications.
AB - Poly (2,6-dimethyl-1,4-phenylene oxide) substituted with quaternary fluoride salts and phosphorous-containing pendent groups were prepared as pH 7 polyelectrolyte solutions. The ability of these polyelectrolytes to bind fluoride ions in solution and to adsorb onto calcium phosphate (hydroxyapatite) surfaces was studied as a function of the number and type of substituent groups. Fluoride binding was found to be enhanced by cross-linking, which maintains the polyelectrolyte in a compressed-coil conformation. Adsorption affinity and resistance to desorption were increased by the presence of phosphorous-containing groups, especially phosphonate esters. These factors will be important in designing polyelectrolytes to remove counter-ions from solution and concentrate them at surfaces for biomedical and industrial applications.
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U2 - 10.1016/0166-6622(87)80108-7
DO - 10.1016/0166-6622(87)80108-7
M3 - Article
AN - SCOPUS:0023421596
VL - 26
SP - 89
EP - 100
JO - Colloids and Surfaces
JF - Colloids and Surfaces
SN - 0166-6622
IS - C
ER -