Mechanical, wear and thermal conductivity characteristics of snail shell-derived hydroxyapatite reinforced epoxy bio-composites for adhesive biomaterials applications

Oladele, Isiaka Oluwole; Onuh, Linus Nnabuike; Taiwo, Anuoluwapo Samuel; Borisade, Sunday Gbenga; Agbeboh, Newton Itua; Lephuthing, Senzeni Sipho

doi:10.1080/19397038.2022.2084174

Cited by 12 publications

(14 citation statements)

References 18 publications

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“…For the eggshell-derived and snail shell-derived HAp-reinforced samples, thermal conductivity showed a concurrent increase with increasing weight percent reinforcements. According to Oladele et al (2022a), 18 reduced thermal conductivity results in greater tolerance to temperature variations. With a value of 0.545 W/mK, 15 wt% snail shell-derived HAp-reinforced sample displayed the best thermal conductivity.…”

Section: Wear Propertiesmentioning

confidence: 99%

“…Some research works have been carried out where particulate animal shell constituents were added for diverse applications. 15,18 Reports have indicated among numerous features, that seashells based on calcium carbonate possess a reasonably lower density compared to mineral calcium carbonate and this improves the mechanical features when reinforced in polymer matrix materials. 22,23 Epoxy resins are distinctive thermoset polymer materials that possess exceptional chemical, mechanical, and physical properties.…”

Section: Introductionmentioning

confidence: 99%

“…The integration of bio-derived hydroxyapatite particulates into an epoxy-based polymer matrix can improve biocompatibility and catalyze the degradation potentials of epoxybased composites as well as promote the enhancement of their bioactivity. 18 Having studied the previous research on the use of HAp for composite development, it was discovered that comparative influence of various solid precursors from natural sources for HAp synthesis has not received much attention. Hence, this research focused on the development of eggshells and snail shells-derived HAp-reinforced epoxy composites for biomedical implants applications.…”

Section: Introductionmentioning

confidence: 99%

“…17 Calcium salts, coral, hollow calcium carbonate (CaCnormalO3) microspheres, mussel shells, snail shells, seashells, chicken eggshells, and xonotlite [Ca6(Si6normalO17)(OH2)] nanowire are solid precursors that have been studied for HAp synthesis. 10,18,19 Among them, snail shells and chicken eggshells are of interest in this research because they are available at no cost, rich in calcium, and can produce HAp that is capable of promoting greater bone reformation. 16…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of animal shells-derived hydroxyapatite reinforced epoxy bio-composites

Oladele,

Taiwo,

Onuh

et al. 2023

Composites and Advanced Materials

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Environmental issues have geared the interest of researchers toward the use of naturally occurring materials for various applications in recent times. Hydroxyapatite particles (HAp) for biomedical applications were synthesized from egg and snail shells and used for the fabrication of bio-composites in this research. The shells were prepared by thoroughly cleaning before subjecting to calcination as well as wet-chemical precipitation treatment to obtain 50 µ sized hydroxyapatite particles that were used for the development of the bio-composites. The composites were fabricated with an open mold stir casting technique after mixing the constituents in predetermined proportions. Mechanical, wear, and physical properties evaluations were carried out on the composites and control samples while the images of the fractured surfaces were examined using a scanning electron microscope. It was revealed from the results that the addition of hydroxyapatite to epoxy improved the properties of the composite where most of the optimal values emerged from 15 wt% HAp-reinforced samples. It was discovered that snail shell HAp-based composites had superior enhancements than the eggshell HAp-based composites which showed that the source of the animal shell influences the characteristics of the ensuing properties. Flexural strength and modulus were 63.95 and 774.64 MPa, respectively; hardness was 40.25 HS, wear index was 0.07, and thermal conductivity was 0.545 W/mK for the snail shell HAp-based composites. Hence, synthesized HAp from snail shells is more structurally stable than eggshell-based and can be used for biomedical applications.

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Section: Wear Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of animal shells-derived hydroxyapatite reinforced epoxy bio-composites

Oladele,

Taiwo,

Onuh

et al. 2023

Composites and Advanced Materials

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The relationship and functional links between human age, growth, and biomedical implants: A review on the application of bulk and nanomaterials

Agbeboh

2023

Nano Select

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Biomaterials are synthetic materials used in making devices for replacing parts of a living being and to function efficiently while interacting with living tissue. Contrary to orthodox medicine in which damaged parts are amputated, the emergence of biomaterials has changed the trend. Different biomaterials including biomedical implants are being developed for different uses within the biomedical field. Thus, biomedical implants are a rapidly advancing class of biomaterials that are currently used for the replacement of diseased parts or damaged tissues in the human body which may be either soft or hard tissues. These materials are developed to meet the structural and biocompatibility needs; hence, they are expected to be safe and acceptable to the human body system as the patient grows. Therefore, the age group and growth rate of the patients that need biomedical implants are parts of the critical factors that required adequate attention. Accordingly, this paper reviews the effects of the human age group and growth on the characteristics and responses of biomedical implants developed from bulk or nanomaterials for use in the human body system. Since, growth is a function of the age group in humans, and the three major age groups respond to growth at different rates, thus, the need to pay adequate attention to this. The review provides suitable information on the demand from each age group and provides the necessary guides on the selection of appropriate biomaterials with respect to age and growth. Hence, the need to have classifications of implants referring to; childhood implants, adolescent implants, and adult implants that focused on challenges that are common to each group.

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Plain-Woven Areca Sheath Fiber-Reinforced Epoxy Composites: The Influence of the Fiber Fraction on Physical and Mechanical Features and Responses of the Tribo System and Machine Learning Modeling

Subramanyam,

Kotikula,

Bennehalli

et al. 2024

ACS Omega

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Recent studies focus on enhancing the mechanical features of natural fiber composites to replace synthetic fibers that are highly useful in the building, automotive, and packing industries. The novelty of the work is that the woven areca sheath fiber (ASF) with different fiber fraction epoxy composites has been fabricated and tested for its tribological responses on three-body abrasion wear testing machines along with its mechanical features. The impact of the fiber fraction on various features is examined. The study also revolves around the development and validation of a machine learning predictive model using the random forest (RF) algorithm, aimed at forecasting two critical performance parameters: the specific wear rate (SWR) and the coefficient of friction (COF). The void fraction is observed to vary between 0.261 and 3.8% as the fiber fraction is incremented. The hardness of the mat rises progressively from 40.23 to 84.26 HRB. A fair ascent in the tensile strength and its modulus is also observed. Even though a short descent in flexural strength and its modulus is seen for 0 to 12 wt % composite specimens, they incrementally raised to the finest values of 52.84 and 2860 MPa, respectively, pertinent to the 48 wt % fiber-loaded specimen. A progressive rise in the ILSS and impact strength is perceptible. The wear behavior of the specimens is reported. The worn surface morphology is studied to understand the interface of the ASF with the epoxy matrix. The RF model exhibited outstanding predictive prowess, as evidenced by high R-squared values coupled with low mean-square error and mean absolute error metrics. Rigorous statistical validation employing paired t tests confirmed the model's suitability, revealing no significant disparities between predicted and actual values for both the SWR and COF.

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Mechanical, wear and thermal conductivity characteristics of snail shell-derived hydroxyapatite reinforced epoxy bio-composites for adhesive biomaterials applications

Cited by 12 publications

References 18 publications

Characterization of animal shells-derived hydroxyapatite reinforced epoxy bio-composites

Characterization of animal shells-derived hydroxyapatite reinforced epoxy bio-composites

The relationship and functional links between human age, growth, and biomedical implants: A review on the application of bulk and nanomaterials

Plain-Woven Areca Sheath Fiber-Reinforced Epoxy Composites: The Influence of the Fiber Fraction on Physical and Mechanical Features and Responses of the Tribo System and Machine Learning Modeling

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