Characterization and Properties of Poly(vinyl alcohol)/Hydroxylapatite Hydrogels Prepared by Compound in situ with Sol-gel Method

Abstract

Abstract: A new kind of bioactive polyvinyl alcohol (PVA)/ hydroxylapatite (HA) blend hydrogels were prepared by compound in situ with sol-gel synthesis of HA. The structures and properties of the blend hydrogels with different HA contents were investigated. The crystal structure and dispersed statement of HA in hydrogels were characterized by XRD, FTIR and SEM. PVA/HA hydrogels were also prepared by physical mixing as a comparison. Ultrafine granular-crystalline HA powder was formed in blend hydrogels with sol-gel synthesis of HA in situ when compounding with PVA solution. Whereas HA was dispersed hon-uniformly and formed agglomeration of HA powder in blend hydrogels when compoumding with PVA by physical mixing. As a additional crystal core, HA accelerated the crystallization of PVA hydrogels, and increased the mechanical strength of the blend hydrogels.

Key words: Hydrogel, Poly(vinyl alcohol), Hydroxylapatite, Bioactivity

CLC Number:

O631

TrendMD:

ZHENG Yu-Dong, WANG Ying-Jun, CHEN Xiao-Feng, LIU Qing, WU Gang . Characterization and Properties of Poly(vinyl alcohol)/Hydroxylapatite Hydrogels Prepared by Compound in situ with Sol-gel Method[J]. Chem. J. Chinese Universities, 2005, 26(9): 1732.

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Characterization and Properties of Poly(vinyl alcohol)/Hydroxylapatite Hydrogels Prepared by Compound in situ with Sol-gel Method

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