Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
1739557
Reference Type
Journal Article
Title
Development of biomimetic coatings on Sm oxide doped ELB (Eu-Li-borate) glasses
Author(s)
Elfayoumi, MAK; Abdel-Fattah, WI; El-Bassyouni, GT
Year
2010
Is Peer Reviewed?
1
Journal
Materials Science and Engineering C: Materials for Biological Applications
ISSN:
0928-4931
EISSN:
1873-0191
Volume
30
Issue
4
Page Numbers
509-517
DOI
10.1016/j.msec.2010.01.012
Web of Science Id
WOS:000277312600002
Abstract
The in-vitro biomineralization of Eu/Li-borate glasses containing Sm(2)O(3) was investigated by immersion in simulated body fluid (SBF) up to 72 h. Back scattering scanning electron microscope supplemented with EDX was used to follow the development of the phosphatic layer post 72 h SBF immersion. Biochemical analyses of calcium and inorganic phosphorus (Ca(2+) and iP) ions were conducted using relevant biochemical kits and spectrophotometer. Spectra of TF-X-ray analyses and Fourier transform infrared were obtained for the samples post 72 h immersion and compared to the host one.
The role of Sm(2)O(3) in the biomineralization and crystallinity of the (ELB) borate glasses is proved by the developed rounded nano particles and the presence of elemental Eu and Sm in the formed layer beside Ca and P as presented by EDX. The continuous reduced values of ionic iP accompanying the adsorption and release of Ca ions in SBF with time assured the biolayer formation. The formed phosphatic layer presented shifted XRD peaks due to ionic incorporations especially of Sm(3+). FT-IR proved the selectivity of BO(3) group for phosphatic deposition. Deconvolution of nu(4) and nu(3) regions, for carbonates and phosphates, respectively, proved the enhanced peak areas with increased Sm(3+) content. (C) 2010 Elsevier B.V. All rights reserved.
Keywords
Eu-lithium-borate glass; Sm-doping; SEM-EDX; SBF biochemical analysis; TF-XRD; FT-IR; IR deconvolution; [Ca][P] activity product
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity