Constant Composition Kinetics Studies of the Simultaneous Crystal Growth of Some Alkaline Earth Carbonates and Phosphates

1995 ◽  
pp. 1-9 ◽  
Author(s):  
George H. Nancollas ◽  
Anita Zieba
Keyword(s):  
Crystal Growth ◽  
Alkaline Earth ◽  
Constant Composition ◽  
Kinetics Studies

Constant composition study of crystal growth of dicalcium phosphate dihydrate. The influence of polyphosphates, phosphonates, and phytate

1988 ◽  
Vol 66 (9) ◽  
pp. 2181-2187 ◽  
Author(s):  
Zahid Amjad
Keyword(s):  
Crystal Growth ◽  
Phosphonic Acid ◽  
Structural Features ◽  
Dicalcium Phosphate Dihydrate ◽  
Constant Composition ◽  
Seed Crystals ◽  
Langmuir Adsorption ◽  
Inhibitor Complex ◽  
Phosphate Dihydrate ◽  
Mechanism Of Inhibition

The influence of inhibitors of varying functional groups on the crystal growth of calcium phosphate dihydrate (CaHPO4•2H2O, DCPD) on DCPD seed crystals at pH 6.00, 37 °C, has been studied using the constant composition technique. The inhibitors studied include: (a) polyphosphate (sodium pyrophosphate, sodium hexametaphosphate, SHMP), (b) phosphonates (nitrilotris(methylene phosphonic acid), NTMP; 1-hydroxyethylidene-1,1-diphosphonic acid, HEDP; ethylenediaminetetra (methylene phosphonic acid), ETMP; hexamethylenediaminetetra(methylene phosphonic acid), HMDP); and (c) myoinositol hexaphosphoric acid (phytic acid). The effect of these inhibitors on the growth kinetics have been studied at several inhibitor concentrations. The retarding effect of these inhibitors is discussed in relation to calcium–inhibitor complex formation on the DCPD seed crystals and the structural features of the inhibitor molecules. The fit of the Langmuir adsorption to experimental data supports a mechanism of inhibition through molecular adsorption of the inhibitor ions on the surface of growing crystals. Based upon the kinetic data, the overall order of inhibitors effectiveness is[Formula: see text]

Crystal growth of alkaline earth fluorides in a reactive atmosphere. Part II

1976 ◽  
Vol 11 (8) ◽  
pp. 1037-1042 ◽  
Author(s):  
R.C. Pastor ◽  
K. Arita
Keyword(s):  
Crystal Growth ◽  
Alkaline Earth

Inhibitors of Crystal Growth of Hydroxyapatite: A Constant Composition Approach

1985 ◽  
Vol 134 (6) ◽  
pp. 1255-1258 ◽  
Author(s):  
James W.L. Wilson ◽  
Peter G. Werness ◽  
Lynwood H. Smith
Keyword(s):  
Crystal Growth ◽  
Constant Composition

Crystal growth of lead fluoride phases using the constant composition method III. Effect of pH and ionic strength

1993 ◽  
Vol 130 (1-2) ◽  
pp. 300-304 ◽  
Author(s):  
Nada Stubičar ◽  
Berislav Marković ◽  
Anton Tonejc ◽  
Mirko Stubičar
Keyword(s):  
Crystal Growth ◽  
Ionic Strength ◽  
Lead Fluoride ◽  
Constant Composition ◽  
Effect Of Ph ◽  
Composition Method

Crystal growth of alkaline earth fluorides in a reactive atmosphere: Part III

1976 ◽  
Vol 11 (10) ◽  
pp. 1327-1334 ◽  
Author(s):  
R.C. Pastor ◽  
M. Robinson
Keyword(s):  
Crystal Growth ◽  
Alkaline Earth

Dual Constant Composition Kinetics Studies of Ceramic Hydroxyapatite and Hydroxyapatite Plasma Coated Implants

2017 ◽  
pp. 163-169
Author(s):  
E.P. Paschalis ◽  
B.E. Tucker ◽  
S. Mukhopadhyay ◽  
K. Wikiel ◽  
N.B. Beals ◽  
...  
Keyword(s):  
Constant Composition ◽  
Kinetics Studies ◽  
Ceramic Hydroxyapatite
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