We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Obtaining Polyvinylpyrrolidone Fibers Using the Electroforming Method with the Inclusion of Microcrystalline High-Temperature Phosphates.
- Authors
Papezhuk, Marina Vladimirovna; Ivanin, Sergei Nikolaevich; Yakupov, Roman Pavlovich; Buz'ko, Vladimir Yurievich; Sukhno, Igor Vladimirovich; Gneush, Anna Nikolaevna; Petriev, Iliya Sergeevich
- Abstract
The results of the synthesis of microcrystalline calcium phosphates such as hydroxoapatite, pyrophosphate, and tricalcium phosphate are presented herein. The influence of the addition of polyvinylpyrrolidone (PVP) on the phase characteristics of the resulting high-temperature ceramic sample is considered. The X-ray results show that hydroxyapatite (HAp) consists of a Ca5(PO4)3(OH) phase, while the sample with the addition of polyvinylpyrrolidone contains β-Ca3(PO4)2 (65.5%) and β-Ca2P2O7 (34.5%) phases calcium phosphates (CPs). IR spectroscopy was used to characterize the compositions of the samples. An important characteristic of the obtained samples is the elemental Ca/P ratio, which was determined via energy-dispersive analysis. The data obtained are consistent with the composition of dental enamel apatites, namely, in the CPs (1.27) and HAp (1.40). SEM was used to study the morphology of the surfaces of hydroxyapatite particles. Polyvinylpyrrolidone polymer fibers were obtained using the electroforming method with the inclusion of CPs in the composition. The fibers were oriented randomly, and nanoscale hydroxyapatite particles were incorporated into the fiber structure. Solubility data of the HAp, CPs, and Fibers in a physiological solution at room temperature and human body temperature were obtained. The solubility of the resulting HAp turned out to be higher than the solubility of the CPs. In turn, the concentration of Ca2+ in a physiological solution of PVP composite fibers with the inclusion of CPs was lower than that in powdered CPs.
- Subjects
CALCIUM phosphate; POVIDONE; ELECTROFORMING; DENTAL enamel; PHOSPHATES; FIBERS
- Publication
International Journal of Molecular Sciences, 2024, Vol 25, Issue 4, p2298
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms25042298