Open AccessBiomimetic fabrication of calcium phosphate/chitosan nanohybrid composite in modified simulated body fluids
Author(s) -
K. H. Park,
S. J. Kim,
Moon-Jin Hwang,
Ho Jun Song,
Y. J. Park
Publication year - 2017
Publication title -
express polymer letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.695
H-Index - 72
ISSN - 1788-618X
DOI - 10.3144/expresspolymlett.2017.3
Subject(s) - chitosan , materials science , fabrication , composite number , simulated body fluid , chemical engineering , calcium , phosphate , nanotechnology , composite material , organic chemistry , chemistry , metallurgy , scanning electron microscope , engineering , medicine , alternative medicine , pathology
In this study, nucleation and growth of bone-like hydroxyapatite (HAp) mineral in modified simulated body fluids (m-SBF) were induced on chitosan (CS) substrates, which were prepared by spin coating of chitosan on Ti substrate. The m-SBF showed a two fold increase in the concentrations of calcium and phosphate ions compared to SBF, and the post-NaOH treatment provided stabilization of the coatings. The calcium phosphate/chitosan composite prepared in m-SBF showed homogeneous distribution of approximately 350 nm-sized spherical clusters composed of octacalcium phosphate (OCP; Ca8H2(PO4)6·5H2O) crystalline structure. Chitosan provided a control over the size of calcium phosphate prepared by immersion in m-SBF, and post-NaOH treatment supported the binding of calcium phosphate compound on the Ti surface. Post-NaOH treatment increased hydrophilicity and crystallinity of carbonate apatite, which increased its potential for biomedical application