Precipitation kinetics of hydroxyapatite revealed by the continuous-angle laser light-scattering technique

Article Abstract:

The precipitation kinetics of hydroxyapatite from calcium phosphate aggregates was investigated by the continuous-angle laser light-scattering technique in the systems CaCl2-H3PO40H2O and KCl-CaCl2-H3PO4-H2O at 25 degree Celsius. It is observed that the apparent molecular weights of aggregates increased with time, and precipitation of hydroxyapatite occurred in both systems.

Hydroxylapatite, Hydroxyapatite, Light scattering

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Electrochemical studies of enantioselectivity at chiral metal surfaces

Article Abstract:

Manifestation of the intrinsic chirality of the metal kink sites is the enantioselective reactive chemisorption of various sugar molecules on kinked single-crystal platinum surfaces. Information regarding the adsorption can be deduced by systematic charges in the structure of the kink site and stereogenic centers on the chemisorbing molecule.

Chirality, Metal surfaces

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Determination of the degradation mechanism from the kinetic parameters of dehydrochlorinated poly(vinyl chloride) decomposition

Article Abstract:

Final conversion of dehydrochlorinated poly vinyl chloride (PVC) in helium depends on the use of heating rate to carry out degradation. The kinetic theory is an accurate depiction of how best to interpret n's (reaction order) for polymer systems undergoing thermal degradation.

Plastics Material and Resin Manufacturing, Plastics materials and resins, Polyvinyl Chloride, Thermogravimetry

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