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Citation: GUO Yan-Chuan, SUN Rui-Xue, MA Ming, CHEN Li-Juan, SONG Yu, DENG Xu-Ming. Preparation and Thermal Properties of Gelatin/β-tricalcium Phosphate Porous Composite Microspheres by W/O Emulsion Process[J]. Chinese Journal of Applied Chemistry, ;2009, 26(6): 1391-1394. shu

Preparation and Thermal Properties of Gelatin/β-tricalcium Phosphate Porous Composite Microspheres by W/O Emulsion Process

1.
a Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190;
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b College of Animal Science and Veterinary Medicine, Jilin University, Changchun

Corresponding author: CHEN Li-Juan,
Received Date: 18 November 2008
Available Online: 5 April 2009
Fund Project: 国家高技术研究发展计划(“八六三”计划,2006AA03Z328) (“八六三”计划,2006AA03Z328)

Using emulsification process and ion association method,gelatin(Gel)/β-tricalcium phosphate(β-TCP) porous composite microspheres were fabricated.The size of the composite microspheres was adjusted by controlling the rate of stirring in the reaction.From the SEM and optical microscopy images,it was found that the size of the composite microspheres arranged from 20 to 40 μm,and the TCP embedded was about 200 nm,and porous structure was formed within the microspheres.When the ratio of m(TCP):m(Gel) was more than 0.4:1,large quantities of petal-like crystal were formed on the surface of the composite microspheres.It was assumed that shaped crystal was formed by TCP dissolved in the reactive solution and inductive re-crystallization by gelatin molecule.IR and XRD show that these composite microspheres contained the structure similar to the natural bone and the chemical bonds existed between the gelatin and TCP.DSC-TGA image illustrates that 90% TCP was embedded inside the gelatin spheres through the emulsion process.The prepared-composite microspheres supplied an excellent carrier for loading and releasing various pharmaceuticals and promoting bone growth factor.
- gelatin,
- β-tricalcium phosphate,
- emulsion,
- microspheres
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