Methods of synthesizing hydroxyapatite powders and bulk materials

Luo, Ping

Methods of synthesizing hydroxyapatite powders and bulk materials

Patent · Tue Jan 12 04:00:00 EST 1999

OSTI ID:872094

Luo, Ping ^[1]

2843A Forest Ave., Berkeley, CA 94705

Methods are provided for producing non-porous controlled morphology hydroxyapatite granules of less than 8 .mu.m by a spray-drying process. Solid or hollow spheres or doughnuts can be formed by controlling the volume fraction and viscosity of the slurry as well as the spray-drying conditions. Methods of providing for homogenous cellular structure hydroxyapatite granules are also provided. Pores or channels or varying size and number can be formed by varying the temperature at which a hydroxyapatite slurry formed in basic, saturated ammonium hydroxide is spray-dried. Methods of providing non-porous controlled morphology hydroxyapatite granules in ammonium hydroxide are also provided. The hydroxyapatite granules and bulk materials formed by these methods are also provided.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA

DOE Contract Number:: W-7405-ENG-48

Assignee:: Luo, Ping (2843A Forest Ave., Berkeley, CA 94705)

Patent Number(s):: US 5858318

Application Number:: 08/757849

OSTI ID:: 872094

Country of Publication:: United States

Language:: English

References (16)

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Related Subjects

/423/501/
ammonium
ammonium hydroxide
basic
bulk
bulk material
cellular
cellular structure
channels
conditions
controlled
controlling
doughnuts
drying process
formed
fraction
granules
hollow
hollow sphere
hollow spheres
homogenous
hydroxide
hydroxyapatite
materials
materials formed
methods
morphology
non-porous
pores
powders
process
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provided
providing
saturated
size
slurry
slurry form
solid
spheres
spray-dried
spray-drying
structure
synthesizing
temperature
varying
varying size
viscosity
volume
volume fraction

Methods of synthesizing hydroxyapatite powders and bulk materials

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References (16)

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