Influence of the Application of Ultrasound During the Synthesis of Calcium Phosphates

Pelizaro, Thales A. Garcia; Tolaba, Angel G.; Rodriguez-Chanfrau, Jorge E.; Veranes-Pantoja, Yaymaliris; Guastaldi, Antônio Carlos

doi:10.1166/jbns.2018.1585

Cited by 5 publications

(8 citation statements)

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“…The main indices (h k l) for ACP are indicated on the spectra according to powder diffraction file (PDF 00-011-0293; PDF 01-074-1301; PDF 00-009-0432) The presence of an intense peak at 2ϴ = 11.6 that corresponds to DCPD in the sample synthesized with ultrasound application was observed in the X-ray diffractogram. Similar results to those reported by Pelizaro et al, [13].…”

Section: Discussionsupporting

confidence: 93%

“…The statistical comparison showed that there were no significant differences between them. The calcium content in the samples evaluated is within the range of values reported by different authors for amorphous calcium phosphates synthesized by wet chemical method [7, 13,21,22].…”

Section: Resultssupporting

confidence: 73%

“…[19] reported a decrease in particle size to values around 30 nm, while Giardine et al [20] reached values between 31.7 and 70.6 nm. Pelizaro et al [13] demonstrated that better results were achieved when applying ultrasound during the synthesis process than when applied after the synthesis process. The results achieved showed that the particle size decreased, obtaining values similar to those reported in the literature.…”

Section: Resultsmentioning

confidence: 99%

“…Previous work reported in our research group showed that the application of ultrasound during the calcium phosphate synthesis process decreases the particle size of these materials [7,13]. On the other hand, these studies were linked to the application of different drying methodologies to evaluate the influence on particle size [7, 8,13].…”

Section: Introductionmentioning

confidence: 99%

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Ultrasonic application and spray drying during amorphous calcium phosphate synthesis

2019

Lett Appl NanoBioSci

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Hydroxyapatite, amorphous calcium phosphates, calcium triphosphate and calcium octaphosphate are the main components present in bones and teeth. Calcium phosphates are easily synthesized, playing an important role in regenerative medicine, being able to be used as bone implants. There are different ways of synthesizing phosphates, the most commonly used being wet chemical method. The objective of this work was to study the influence of the use of ultrasound and spray drying on the synthesis of amorphous calcium phosphate. Two synthetic variants were studied. One without ultrasound application and the other with ultrasound application. The samples obtained were characterized by X-ray diffraction, FTIR spectroscopy and scanning electron microscopy. The particle size by electron microscopy and the calcium content by atomic absorption was determined. The results showed that when spray drying is applied, particle sizes of less than 261 nm are obtained in the samples synthesized without ultrasound application, being less than 59 nm in the samples synthesized with ultrasound application. The statistical analysis by ANOVA showed significant differences between the particle sizes of the samples synthesized without ultrasound application and the samples synthesized by applying ultrasound. In both cases the particles were spherical. The results obtained show that the application of ultrasound during the synthesis process decreases the particle size, increasing the surface area, which favors the spray drying process.

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Section: Discussionsupporting

confidence: 93%

Section: Resultssupporting

confidence: 73%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ultrasonic application and spray drying during amorphous calcium phosphate synthesis

2019

Lett Appl NanoBioSci

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“…The objective of this study was to evaluate the influence of the MW radiation application of a multi-phase biomaterial made of a three-phase mixture of calcium phosphates synthesized by wet chemical method [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the influence of microwaves radiation on a biomaterial composed of three phases of calcium phosphates

2020

Biointerface Res Appl Chem

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The chemical similarity with the bone components that calcium phosphates present have been the fundamental cause of their use as biomaterials in the regeneration processes, presenting good biocompatibility, bioactivity and osteoconductivity. Among the biomaterials studied from calcium phosphates, there are multiphase biomaterials, which are those that contain two or more phases of calcium phosphates in their composition. These mixtures improve the chemical-physical and biological properties of these materials. The use of biomaterials in the regeneration process requires previously eliminating the microorganisms present in the material, through a sterilization process. Different sterilization methodologies have been applied to decontaminate biomaterials, including the use of microwave radiation. The objective of this study was to evaluate the influence of the MW radiation application of a multi-phase biomaterial made of a three-phase mixture of calcium phosphates synthesized by wet chemical method. The results of this study showed that the application of MW radiation to ceramic samples containing the OCP phase causes the thermal decomposition of this phase, modifying its crystallinity index. This aspect should be taken into account when applying sterilization by applying MW radiation to ceramic samples with characteristics similar to those studied in this work.

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Calcium phosphates nanoparticles: The effect of freeze-drying on particle size reduction

Piazza

Pelizaro

Rodriguez-Chanfrau³

et al. 2020

Materials Chemistry and Physics

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Influence of the Application of Ultrasound During the Synthesis of Calcium Phosphates

Cited by 5 publications

References 0 publications

Ultrasonic application and spray drying during amorphous calcium phosphate synthesis

Ultrasonic application and spray drying during amorphous calcium phosphate synthesis

Evaluation of the influence of microwaves radiation on a biomaterial composed of three phases of calcium phosphates

Calcium phosphates nanoparticles: The effect of freeze-drying on particle size reduction

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