RTU Research Information System
Latviešu English

Publikācija: Fourier Transform Infrared Spectra of Technologically Modified Calcium Phosphates

Publication Type Conference paper
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Fourier Transform Infrared Spectra of Technologically Modified Calcium Phosphates
Field of research 2. Engineering and technology
Sub-field of research 2.4 Chemical engineering
Authors Kristīne Šalma-Ancāne
Līga Bērziņa-Cimdiņa
Natālija Borodajenko
Aelita Platā
Agnese Stunda Zujeva
Keywords calcium phosphates, synthesis, infrared spectra
Abstract Calcium phosphate powders were synthesized by wet-chemical precipitation method using CaCO3 and H3PO4 as starting materials. Influence of technological parameters on chemical composition of as-prepared and thermal treated calcium phosphate samples were investigated. The following technological parameters were varied: temperature of the suspension during the process of synthesis (T, °C), ending pH value, aging time of suspension (τ, h) and thermal processing (T, °C; τ, h). The obtained calcium phosphates powders were identified and characterized using Fourier transform infrared spectroscopy method and X-ray diffraction. FTIR spectra of as-synthesized calcium phosphate powders showed characteristic chemical bands of hydroxyapatite (PO4 3-, OH-, H2O absorbed, CO32- , HPO42-) at definite wave number ranges. Carbonate and OH- absorbed bands disappear after calcination above 900°C. The experimental results of FTIR spectra X-ray diffraction showed biphasic mixtures containing HAp and β-tricalciumphosphate (β-TCP). The secondary phase (β-TCP) was formed after calcination HAp samples at 1000°C and above.
Reference Šalma-Ancāne, K., Bērziņa-Cimdiņa, L., Borodajenko, N., Platā, A., Stunda-Zujeva, A. Fourier Transform Infrared Spectra of Technologically Modified Calcium Phosphates. In: 14th Nordic-Baltic Conference on Biomedical Engineering and Medical Physics: Abstracts , Latvia, Riga, 16-20 June, 2008. Riga: Riga Technical University, 2008, pp.133-133.
Full-text Full-text
ID 4073