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Damage Evolution and Fracture Events Sequence Analysis of Core-Shell Nanoparticle Modified Bone Cements by Acoustic Emission Technique

In this research, damage in bone cements that were prepared with core-shell nanoparticles was monitored during four-point bending tests through an analysis of acoustic emission (AE) signals. The core-shell structure consisted of poly(butyl acrylate) (PBA) as rubbery core and methyl methacrylate/styr...

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Autores principales: Pacheco-Salazar, O.F., Wakayama, Shuichi, Can-Herrera, L.A., Dzul-Cervantes, M.A.A., Ríos-Soberanis, C.R., Cervantes-Uc, J.M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7023568/
https://www.ncbi.nlm.nih.gov/pubmed/31952108
http://dx.doi.org/10.3390/polym12010208
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author Pacheco-Salazar, O.F.
Wakayama, Shuichi
Can-Herrera, L.A.
Dzul-Cervantes, M.A.A.
Ríos-Soberanis, C.R.
Cervantes-Uc, J.M.
author_facet Pacheco-Salazar, O.F.
Wakayama, Shuichi
Can-Herrera, L.A.
Dzul-Cervantes, M.A.A.
Ríos-Soberanis, C.R.
Cervantes-Uc, J.M.
author_sort Pacheco-Salazar, O.F.
collection PubMed
description In this research, damage in bone cements that were prepared with core-shell nanoparticles was monitored during four-point bending tests through an analysis of acoustic emission (AE) signals. The core-shell structure consisted of poly(butyl acrylate) (PBA) as rubbery core and methyl methacrylate/styrene copolymer (P(MMA-co-St)) as a glassy shell. Furthermore, different core-shell ratios 20/80, 30/70, 40/60, and 50/50 were prepared and incorporated into the solid phase of the bone cement formulation at 5, 10, and 15 wt %, respectively. The incorporation of a rubbery phase into the bone cement formulation decreased the bending strength and bending modulus. The AE technique revealed that the nanoparticles play an important role on the fracture mechanism of the bone cement, since a higher amount of AE signals (higher amplitude and energy) were obtained from bone cements that were prepared with the nanoparticles in comparison with those without nanoparticles (the reference bone cement). The SEM examination of the fracture surfaces revealed that all of the bone cement formulations exhibited stress whitening, which arises from the development of crazes before the crack propagation. Finally, the use of the AE technique and the fracture surface analysis by SEM enabled insight into the fracture mechanisms that are presented during four-point bending test of the bone cement containing nanoparticles.
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spelling pubmed-70235682020-03-12 Damage Evolution and Fracture Events Sequence Analysis of Core-Shell Nanoparticle Modified Bone Cements by Acoustic Emission Technique Pacheco-Salazar, O.F. Wakayama, Shuichi Can-Herrera, L.A. Dzul-Cervantes, M.A.A. Ríos-Soberanis, C.R. Cervantes-Uc, J.M. Polymers (Basel) Article In this research, damage in bone cements that were prepared with core-shell nanoparticles was monitored during four-point bending tests through an analysis of acoustic emission (AE) signals. The core-shell structure consisted of poly(butyl acrylate) (PBA) as rubbery core and methyl methacrylate/styrene copolymer (P(MMA-co-St)) as a glassy shell. Furthermore, different core-shell ratios 20/80, 30/70, 40/60, and 50/50 were prepared and incorporated into the solid phase of the bone cement formulation at 5, 10, and 15 wt %, respectively. The incorporation of a rubbery phase into the bone cement formulation decreased the bending strength and bending modulus. The AE technique revealed that the nanoparticles play an important role on the fracture mechanism of the bone cement, since a higher amount of AE signals (higher amplitude and energy) were obtained from bone cements that were prepared with the nanoparticles in comparison with those without nanoparticles (the reference bone cement). The SEM examination of the fracture surfaces revealed that all of the bone cement formulations exhibited stress whitening, which arises from the development of crazes before the crack propagation. Finally, the use of the AE technique and the fracture surface analysis by SEM enabled insight into the fracture mechanisms that are presented during four-point bending test of the bone cement containing nanoparticles. MDPI 2020-01-15 /pmc/articles/PMC7023568/ /pubmed/31952108 http://dx.doi.org/10.3390/polym12010208 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Pacheco-Salazar, O.F.
Wakayama, Shuichi
Can-Herrera, L.A.
Dzul-Cervantes, M.A.A.
Ríos-Soberanis, C.R.
Cervantes-Uc, J.M.
Damage Evolution and Fracture Events Sequence Analysis of Core-Shell Nanoparticle Modified Bone Cements by Acoustic Emission Technique
title Damage Evolution and Fracture Events Sequence Analysis of Core-Shell Nanoparticle Modified Bone Cements by Acoustic Emission Technique
title_full Damage Evolution and Fracture Events Sequence Analysis of Core-Shell Nanoparticle Modified Bone Cements by Acoustic Emission Technique
title_fullStr Damage Evolution and Fracture Events Sequence Analysis of Core-Shell Nanoparticle Modified Bone Cements by Acoustic Emission Technique
title_full_unstemmed Damage Evolution and Fracture Events Sequence Analysis of Core-Shell Nanoparticle Modified Bone Cements by Acoustic Emission Technique
title_short Damage Evolution and Fracture Events Sequence Analysis of Core-Shell Nanoparticle Modified Bone Cements by Acoustic Emission Technique
title_sort damage evolution and fracture events sequence analysis of core-shell nanoparticle modified bone cements by acoustic emission technique
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7023568/
https://www.ncbi.nlm.nih.gov/pubmed/31952108
http://dx.doi.org/10.3390/polym12010208
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