Use of micrometric latex beads to improve the porosity of hydroxyapatite obtained by chemical coprecipitation method

Webler, Geovana Dresch; Rodrigues, Wagner Cirilo; Silva, A.E.S.; Silva, Antônio Osimar Sousa da; Fonseca, Eduardo J.S.; Degenhardt, Maximilia F. S.; Oliveira, Cristiano L. P.; Otubo, Larissa; Filho, Djalma de Albuquerque Barros

doi:10.1016/j.apsusc.2017.11.218

Cited by 10 publications

(2 citation statements)

References 57 publications

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“…Ceramic materials such as hydroxyapatite, tricalcium phosphate (TCP), calcium silicate, and bioglass ceramics are commonly used in this application [21]. A porous composite to be applied as a scaffold in tissue engineering needs to encompass important characteristics such as biocompatibility, osteoconductivity, interconnected porous structure, appropriate mechanical strength, and biodegradability [22].…”

Section: Discussionmentioning

confidence: 99%

Modified Synthesis and Physicochemical Characterization of a Bioglass-Based Composite for Guided Bone Regeneration

Silva

Alves

Graeff

et al. 2021

The Scientific World Journal

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Objectives. Bioglass composites and polymers are materials of great interest for the medical and dental areas due to their properties, combining the bioactivity of ceramic materials and the mechanical properties of polymers. The purpose of the present study was to develop and to characterize the physicochemical and morphological properties an experimental bioglass-based ternary composite composed associated with sodium carboxymethylcellulose (Na-CMC) and polyvinyl alcohol (PVA). The compatibility of functional groups with bioglass was previously evaluated. The composite was then synthesized and evaluated in terms of morphology, elemental composition, compressive strength, porosity, and bioactivity. Materials and Methods. The bioglass was previously synthesized using a sol-gel route and characterized using FTIR analysis to identify the functional groups. The bone graft composite was then synthesized associating the bioglass with PVA, surfactant Triton X, and Na-CMC. The composite was then morphologically characterized using SEM/EDS. The porosity of the composite was analyzed using µCT, which also provided the composite compression strength. The composite was then evaluated in terms of its bioactivity using SEM/EDS analyses after immersion in SBF for 12, 24, 48, and 72 h. Results. FTIR analysis confirmed, among other components, the presence of Si–O–Ca and Si–O–Si bonds, compatible with bioglass. SEM analysis exhibited a composite with a porous structure without spikes. The elemental mapping confirmed the presence of Si, Ca, and P in the composite. µCT analysis demonstrated a porous structure with 42.67% of open pores and an average compression strength of 124.7 MPa. It has also demonstrated ionic changes in the composite surface after immersion in SBF, with increasing detection of Ca and P as a function of time, highlighting its chemical bioactivity. Conclusions. It can be concluded that the proposed bioglass-based composite presents a three-dimensional, well-structured, chemically bioactive porous structure, mechanically resistant for being reinforced with polymeric phases, with promising results as a synthetic bone graft, which makes it suitable for guided bone regeneration.

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Section: Discussionmentioning

confidence: 99%

Modified Synthesis and Physicochemical Characterization of a Bioglass-Based Composite for Guided Bone Regeneration

Silva

Alves

Graeff

et al. 2021

The Scientific World Journal

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“…By modulating the surface area and porosity, functional hydroxyapatite devices for nanofiltration and catalysis can be designed. Webler et al [ 137 ] achieved surface areas above 200 m 2 g −1 and a degree of porosity close to 70% by using latex bead templates. Chen et al [ 138 ] were the first in utilizing the animal bone to design and prepare cost-effective and stable catalytic systems by using wet impregnation method for biodiesel production.…”

Section: Applications Of Smart Hydroxyapatite-based Materialsmentioning

confidence: 99%

Advanced Materials Based on Nanosized Hydroxyapatite

et al. 2021

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The development of new materials based on hydroxyapatite has undergone a great evolution in recent decades due to technological advances and development of computational techniques. The focus of this review is the various attempts to improve new hydroxyapatite-based materials. First, we comment on the most used processing routes, highlighting their advantages and disadvantages. We will now focus on other routes, less common due to their specificity and/or recent development. We also include a block dedicated to the impact of computational techniques in the development of these new systems, including: QSAR, DFT, Finite Elements of Machine Learning. In the following part we focus on the most innovative applications of these materials, ranging from medicine to new disciplines such as catalysis, environment, filtration, or energy. The review concludes with an outlook for possible new research directions.

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Structural analysis, optical and mechanical properties of TixZr1−xO2 nanoparticles synthesized by modified co-precipitation route

2020

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Use of micrometric latex beads to improve the porosity of hydroxyapatite obtained by chemical coprecipitation method

Cited by 10 publications

References 57 publications

Modified Synthesis and Physicochemical Characterization of a Bioglass-Based Composite for Guided Bone Regeneration

Modified Synthesis and Physicochemical Characterization of a Bioglass-Based Composite for Guided Bone Regeneration

Advanced Materials Based on Nanosized Hydroxyapatite

Structural analysis, optical and mechanical properties of TixZr1−xO2 nanoparticles synthesized by modified co-precipitation route

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