Control of calcium phosphate crystal nucleation, growth and morphology by polyelectrolytes (CROSBI ID 495903)
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Podaci o odgovornosti
Füredi-Milhofer, Helga ; Bar-Yosef, P. ; Sikirić, Maja ; Garti, Nissim
engleski
Control of calcium phosphate crystal nucleation, growth and morphology by polyelectrolytes
Crystal growth of calcium hydrogenphosphate dihydrate (DCPD), in the presence of polyaspartic acid or calcium phytate (system A), as well as nucleation and growth of octacalcium phosphate (OCP), in the presence of poly-l-lysine, poly-l-glutamic acid or polystyrene sulfonate (system B) have been investigated. In system A crystallization of DCPD was inhibited and the crystal growth morphology was specifically modified by preferential interaction of the respective additive with the dominant (010) crystal face. In system B crystals were formed via precursor phase(s) and polyelectrolytes exhibited dual action, at low concentrations inducing and at high concentrations inhibiting nucleation of the crystalline phase. Crystal/additive interactions controlling growth were nonspecific and resulted in smaller crystals with rounded edges, but with the same basic orientation as in the controls.
calcium phosphate; nucleation; crystal growth
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Podaci o prilogu
2003.
objavljeno
Podaci o matičnoj publikaciji
Porto:
Podaci o skupu
Bioceramics 16
predavanje
06.11.2003-09.11.2003
Porto, Portugal