Preparation of Composite Hollow Microspheres on Gelatin Spheres as Templates

Journal of Inorganic Materials

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Preparation of Composite Hollow Microspheres on Gelatin Spheres as Templates

DING Su-Li; ZHU Yi-Hua; YANG Xiao-Ling

Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China

Received:2003-09-27 Revised:2003-12-01 Published:2004-09-20 Online:2004-09-20

Abstract

Abstract: The gelatin/SiO₂/PAH composite microspheres using gelatin spheres as templates were fabricated
by layer-by-layer self-assembly. Templates were removed by dissolving in hot water and the hollow SiO₂/PAH microspheres were produced. Samples
were characterized by ζ- potential, TEM, IR, TG, etc. measurements. The results showed that SiO₂/PAH was assembled effectively on gelatin
spheres and formed core-shell structure, and hollow structure was obtained by removing gelatin. In the process of dissolving templates, slow-releasing
effect of hollow microspheres was found by the determination of amino acids from the hydrolyzed gelatin.

Key words: gelatin microspheres, composite microspheres, hollow microspheres, layer-by-layer self-assembly, slow-releasing effect

CLC Number:

TB322

DING Su-Li,ZHU Yi-Hua,YANG Xiao-Ling. Preparation of Composite Hollow Microspheres on Gelatin Spheres as Templates[J]. Journal of Inorganic Materials.

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Preparation of Composite Hollow Microspheres on Gelatin Spheres as Templates

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