Preparation of chitosan - hydroxyapatite nanocomposites

被引：2

作者：

Zhang, Jingxian ^{[1
]}

Jiang, Dongliang ^{[1
]}

Lin, Qingling ^{[1
]}

Chen, Zhongming ^{[1
]}

Huang, Zhengren ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

MATERIALS AND DESIGN, PTS 1-3 | 2011年 / 284-286卷

关键词：

Chitosan; Nanocomposite; Co-precipitation; COMPOSITE;

D O I：

10.4028/www.scientific.net/AMR.284-286.1760

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Chitosan/Hydroxyapatite composites with a homogeneous nanostructure have been prepared by a co-precipitation method. Initially, a chitosan solution was prepared and mixed with the (NH4)(2)HPO4 solution. After homogenizing, the obtained chitosan/(NH4)(2)HPO4 solution was gradually dropped into the Ca (NO3)(2)4H(2)O solution under stirring. The solution pH was adjusted to 9 using NH3 center dot H2O. The precipitate was compressed into a cylindrical form followed by post treatment. The microstructure, phase composition and mechanical properties of the resulting chitosan-HAp composites were characterized. In the presence of chitosan, HAp crystallites were found to be well aligned along the c-axes in the respective aggregates. Fourier transform infrared spectrometer results indicated that an intermolecular bridging complexes might have been developed between the chitosan and HAp. The compact composites obtained were mechanically flexible, the highest strength was found to be 38.4 MPa for chitosan/HAp samples with a 20 wt% of chitosan.

引用

页码：1760 / 1763

页数：4

共 11 条

[1] CHITIN - NEW FACETS OF RESEARCH [J].