Tribomechanical and Surface Topographical Investigations of Poly Methyl Methacrylate-Seashell Particle based Biocomposite

Rajkumar, Karthick; Sirisha, Puttabanthi; Sankar, Mamilla Ravi

doi:10.1016/j.mspro.2014.07.436

Cited by 9 publications

(6 citation statements)

References 5 publications

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“…PMHA8 exhibited the maximum hardness (87.7 D index), with an increase of 9% compared with pure PMMA (79.9 D index). The hardness of a composite depends on the strength of the intermolecular bonds between the nanoparticles and matrix; thus, its enhancement could be attributed to the uniform distribution of the HA nanoparticles inside the PMMA matrix [ 58 ], which promoted a good interface between them that enhanced the load transfer and consolidated the resistance against shear stresses resulting from volume compression [ 59 ]. The obtained results further demonstrate that a low HA loading can enhance the mechanical properties of PMMA, unlike high filler loadings that encourage agglomeration and deteriorate the material properties [ 60 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of Low Hydroxyapatite Loading Fraction on the Mechanical and Tribological Characteristics of Poly(Methyl Methacrylate) Nanocomposites for Dentures

et al. 2021

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Denture base materials need appropriate mechanical and tribological characteristics to endure different stresses inside the mouth. This study investigates the properties of poly(methyl methacrylate) (PMMA) reinforced with different low loading fractions (0, 0.2, 0.4, 0.6, and 0.8 wt.%) of hydroxyapatite (HA) nanoparticles. HA nanoparticles with different loading fractions are homogenously dispersed in the epoxy matrix through mechanical mixing. The resulting density, Compressive Young’s modulus, compressive yield strength, ductility, fracture toughness, and hardness were evaluated experimentally; the friction coefficient and wear were estimated by rubbing the PMMA/HA nanocomposites against stainless steel and PMMA counterparts. A finite element model was built to determine the wear layer thickness and the stress distribution along the nanocomposite surfaces during the friction process. In addition, the wear mechanisms were elucidated via scanning electron microscopy. The results indicate that increasing the concentration of HA nanoparticles increases the stiffness, compressive yield strength, toughness, ductility, and hardness of the PMMA nanocomposite. Moreover, tribological tests show that increasing the nanoparticle weight fraction considerably decreases the friction coefficient and wear loss.

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Section: Resultsmentioning

confidence: 99%

Effect of Low Hydroxyapatite Loading Fraction on the Mechanical and Tribological Characteristics of Poly(Methyl Methacrylate) Nanocomposites for Dentures

et al. 2021

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“…Chong et al [ 12 ] obtained fire-retardant plastic material from oyster-shell powder and recycled polyethylene. The seashell reinforcement in poly(methyl methacrylate) (PMMA) improved compressive strength and wear resistance [ 13 ]. Funabashi et al [ 14 ] evaluated the presence of calcium carbonate from oyster shell powder in a blend of poly(butylene succinate) (PBS).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Mussel Shells Powder as Reinforcement for PLA-Based Biocomposites

Gigante

Cinelli

Righetti

et al. 2020

IJMS

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The use of biopolyesters, as polymeric matrices, and natural fillers derived from wastes or by-products of food production to achieve biocomposites is nowadays a reality. The present paper aims to valorize mussel shells, 95% made of calcium carbonate (CaCO3), converting them into high-value added products. The objective of this work was to verify if CaCO3, obtained from Mediterranean Sea mussel shells, can be used as filler for a compostable matrix made of Polylactic acid (PLA) and Poly(butylene adipate-co-terephthalate) (PBAT). Thermal, mechanical, morphological and physical properties of these biocomposites were evaluated, and the micromechanical mechanism controlling stiffness and strength was investigated by analytical predictive models. The performances of these biocomposites were comparable with those of biocomposites produced with standard calcium carbonate. Thus, the present study has proved that the utilization of a waste, such as mussel shell, can become a resource for biocomposites production, and can be an effective option for further industrial scale-up.

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“…Such experimental works supposed to use as additives: fibers, whiskers or nanoparticles as presented in table 1. The PMMA bio-composites with 0, 2, 5% filler percentages are the most common compositions used resulting in an uniform filler's disperse in the polymer, although 6% or 12% additive could be as well applied -for seashell nanopowder [49].…”

Section: Results and Discussion Pmma Reinforcement Contentmentioning

confidence: 99%

Could the Old Poly(methylmethacrylate) Face Arrising Challanges of New Advanced Technologies for Dental Prosthesis Manufacturing?

Totu¹,

Cristache²

2017

Rev. Chim.

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The biocompatibility, relatively low cost and excellent aesthetic appearance of polymer Poly(methyl methacrylate) (PMMA) makes it the material of choice for fabricating partially and complete dentures. Nowadays the emerging 3D printing technique imposed itself as reliable solution for obtaining dental devices. However, extensive usage of such technique is still limited due to the materials available. Despite PMMA's drawbacks, mainly related to bacterial contamination, wear and mechanical failures, composite polymeric matrix has issued high interest lately. An important improvement in basic material properties have been achieved due to the inclusion of nanosystems, either nanoparticles or nanotubes. The newly shown versatility of reinforced PMMA sustains it as the best alternative for stereolithography (3D printing) technique. This paper highlights the improvements of PMMA by adding different type of nanofillers. Therefore, prospective randomized clinical in vivo studies with the use of biocompatible tested modified filled PMMA and modern technologies should be performed.

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Tribomechanical and Surface Topographical Investigations of Poly Methyl Methacrylate-Seashell Particle based Biocomposite

Cited by 9 publications

References 5 publications

Effect of Low Hydroxyapatite Loading Fraction on the Mechanical and Tribological Characteristics of Poly(Methyl Methacrylate) Nanocomposites for Dentures

Effect of Low Hydroxyapatite Loading Fraction on the Mechanical and Tribological Characteristics of Poly(Methyl Methacrylate) Nanocomposites for Dentures

Evaluation of Mussel Shells Powder as Reinforcement for PLA-Based Biocomposites

Could the Old Poly(methylmethacrylate) Face Arrising Challanges of New Advanced Technologies for Dental Prosthesis Manufacturing?

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