Nanostructures of Hydroxyapatite in Pluronic F 127: Preparation and Structural Characterization

Araujo dos Santos, Euler; de Oliveira Fortes, Vanessa Danielle; Diniz, Wandeberg Aranha; Resende, Cristiane Xavier; Almeida, Luiz Eduardo; Teixeira, Zaine

Get full access here Site/IP Subscriptions Log in

My Cart

Advanced Search

Paper Titles

Electrical Polarization Depresses Low Temperature Degradation and Promotes Bioactivity of Chemically Treated Yttria-Stabilized Zirconia, p.11
Biomimetic Magnetic Nanoparticles for Hyperthermia Treatment, p.16
Simultaneous Insertion of Mg²⁺, Sr²⁺ and Mn²⁺ Ions into Hydroxyapatite Structure, p.20
Silver-Doped Apatite as a Bioactive and an Antimicrobial Bone Material, p.27
Nanostructures of Hydroxyapatite in Pluronic F 127: Preparation and Structural Characterization, p.31
Evaluation of Cytocompatibility of Bioglass-Niobium Granules with Human Primary Osteoblasts: A Multiparametric Approach, p.37
The Impact of Stirring Rate on the Crystallinity and Bioactivity of 58S Bioactive Glass, p.43
The 110⁰ C Thermoluminescence Peak as a Probe in Bioactivity Study of the 58S Sol-Gel Bioactive Glass, p.49
Ion Release Behavior and Apatite-Forming Ability of Sol-Gel Derived 70S30C Bioactive Glass with Magnesium/Zinc Substitution, p.55

Home > Key Engineering Materials > Bioceramics 23 > Nanostructures of Hydroxyapatite in Pluronic F...

Paper Title:

Nanostructures of Hydroxyapatite in Pluronic F 127: Preparation and Structural Characterization

Periodical	Key Engineering Materials (Volumes 493 - 494)
Main Theme	Bioceramics 23
Edited by	Eyup Sabri Kayali, Gultekin Goller and Ipek Akin
Pages	31-36
DOI	10.4028/www.scientific.net/KEM.493-494.31
Citation	Vanessa Danielle de Oliveira Fortes et al., 2011, Key Engineering Materials, 493-494, 31
Online since	October, 2011
Authors	Vanessa Danielle de Oliveira Fortes, Wandeberg Aranha Diniz, Euler Araujo dos Santos, Cristiane Xavier Resende, Luiz Eduardo Almeida, Zaine Teixeira
Keywords	Bone Healing, Hydroxyapatite (HAP), Pluronic F127
Price	US$ 28,-

View full size

Abstract

In this work, nanocomposites of hydroxyapatite and Pluronic F127 were prepared by a wet chemical method, using acid-basic reaction with Ca/P ratio of 1.67 in 10% (m/V) Pluronic F127 at 0, 37 and 90^oC. The final concentration of Pluronic F127 was adjusted to 37% (m/V) at 4^oC. Afterwards, the samples were lyophilized. Characterization was performed in purified samples (after Pluronic F127 removal), samples with 10% (m/V) of Pluronic F127 and calcined samples at 1000^oC by X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscopy (SEM). Analyses by XRD of non-calcined samples showed that hydroxyapatite was obtained, in which the samples prepared at 0^oC exhibited larger peaks attributed to lower crystallite sizes. For the calcined samples, both Raman spectroscopy and XRD exhibited hydroxyapatite for the syntheses at 37 and 90^oC whereas the one prepared 90^oC were identified as β-tricalcium phosphate (β-TCP). Morphological analysis by SEM indicated that the hydroxyapatite was sphere or rod agglomerates in mesoporous morphology for the nanocomposites prepared at 0 and 37^oC, while the sample prepared at 90^oC was nanospheres agglomerated into a smother matrix. After Pluronic F127 removal, samples fabricated at 0 and 37 ^oC exhibited coalescence of the nanostructures, whereas the sample synthesized at 90^oC kept mesoporous. Calcined samples showed sintering and some rods structures.