Methods of synthesizing hydroxyapatite powders and bulk materials

Luo, Ping

Title: Methods of synthesizing hydroxyapatite powders and bulk materials

Patent · Tue Jan 12 00:00:00 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 (United States)

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

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

Title: Methods of synthesizing hydroxyapatite powders and bulk materials

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References (16)

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