Comprehensive data on the mechanical properties and biodegradation profile of polylactide composites developed for hard tissue repairs

Aworinde, Abraham K.; Adeosun, S. O.; Oyawale, F. A.; Emagbetere, Eyere; Ishola, Felix; Olatunji, Obafemi O.; Akinlabi, Stephen A.; Oyedepo, Sunday Olayinka; Ajayi, Oluseyi O.; Akinlabi, Esther T.

doi:10.1016/j.dib.2020.106107

Cited by 12 publications

(10 citation statements)

References 10 publications

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“…The materials used in this study include PLA, chitosan, chitin, and titanium powder. Our earlier work ( Aworinde et al, 2020a;Aworinde et al, 2020c) details the properties of the materials and how they were obtained. Melt-blending technique was used to produce three PLA composites with chitosan, chitin, and titanium (Ti-6Al-2Sn-2Mo-2Cr-0.25Si) powders as reinforcements.…”

Section: Methodsmentioning

confidence: 99%

“…The choice of these fillers thus helped to compare the effects of organic and inorganic reinforcements on the hardness value of PLA. Our previous studies explain, in detail, the composite fabrication method employed in the development of the samples ( Aworinde et al, 2020a;Aworinde et al, 2020c), matrix-fillers formulation and the details of Vickers microhardness characterisation (Aworinde et al, 2020c). The microhardness indentation dwell times were chosen in accordance to ASTM standard (ASTM-E384, 2017).…”

Section: Methodsmentioning

confidence: 99%

“…Improving on it has, therefore, not been the focus of researchers. Yet studies have shown that improved hardness is an empirical result of reinforcing PLA with particulate fillers (Aworinde et al, 2020c;Aworinde et al, 2019a;Feng et al, 2016), and several particulate-reinforced PLA composites have been developed for both the soft (Adeosun et al, 2016;Deepthi et al, 2016;Gbenebor et al, 2018) and the hard (Aworinde et al, 2020c;Wang et al, 2016) tissues applications. Aside from the use of particulate reinforcements, developing PLA composites requires the use of certain polymer composites processing techniques (Aworinde et al, 2018;Aworinde et al, 2019b;Deepthi et al, 2016), which often impact the hardness properties of PLA significantly (Vian & Denton, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…The hardness test is one of the most performed mechanical tests because of its usefulness and versatility and Vickers hardness has been reported to be one of the oldest methods of determining the hardness properties of materials because of its wide hardness scale (Moore & Booth, 2015). From Vickers (HV) hardness test, for instance, a number of other helpful parameters can be measured to give a reasonable prediction of other mechanical properties such as fracture toughness (Bergner et al, 2007;Moradkhani et al, 2013) as described in our previous study (Aworinde, et al, 2020c). In addition to the Vickers hardness test, a few other available hardness tests include (though not limited to) Brinell hardness test (HB), Knoop hardness test (HK), Janka hardness test, Meyer hardness test, Rockwell hardness test (HR), Shore durometer hardness test and Barcol hardness test are a few of the available hardness tests.…”

Section: Introductionmentioning

confidence: 99%

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Polylactide and its Composites on Various Scales of Hardness

Aworinde¹,

Emagbetere²,

Adeosun³

et al. 2021

JST

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Polylactide (PLA) has become a widely applied material. Its hardness property has, however, not been a subject of intense study. This study attempts to examine the hardness values of Polylactide and its composites on ten hardness scales. Polylactide composites were developed using three reinforcements (i.e., chitosan, chitin, and titanium powders). The compositing method was the melt-blending technique. Vickers microindentation test was carried out on all the developed samples. The experimental values obtained were related to nine (9) other scales of hardness via an online reference interface. Results showed that the Brinell and Rockwell hardness scales agreed, to a large extent, with the experimental values from several studies. Hence, this work can serve as a reference material on the Brinell and Rockwell hardness values of the unreinforced and reinforced composites considered in this study. The developed materials were also represented on the Mohs scale of hardness with unreinforced PLA having the least value of hardness which corresponds to the value of gypsum on the Mohs scale while the PLA reinforced with 8.33 weight (wt.) % of titanium powder has the highest value of hardness corresponding to the value of a material in-between calcite and fluorite. The hardness values obtained on Shore scleroscope could not agree with the experimental values from various studies. Succinctly, the three particulate fillers increased the hardness properties of PLA. The results of this study would go a long way in helping industrialists and researchers in the correct applications of PLA and its composites.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Polylactide and its Composites on Various Scales of Hardness

Aworinde¹,

Emagbetere²,

Adeosun³

et al. 2021

JST

Self Cite

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“…Having biocompatibility and biodegradability as well as excellent reconcilability with human tissues, PLA-based materials are put to ever-wider use. [1][2][3][4][5][6][7] Since the mechanical and physical properties of PLA compare well with those of synthetic polymers, PLA and its copolymers are an ecological alternative to plastics made from petrochemical raw materials. [8][9][10] PLA is a hydrophobic thermoplastic polymer.…”

Section: Introductionmentioning

confidence: 99%

New method for controlled synthesis of polylactide block copolymers: organoborane/p‐quinone system and reversible‐deactivation radical polymerization

Ludin

Зайцев

Маркин

et al. 2021

Polymer International

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We developed a new approach to obtain polylactide hybrid block copolymers with vinyl monomers (styrene, methyl methacrylate, methyl acrylate) through the realization of a reaction sequence using triethylborane and various p-quinones. The method offered includes two stages. In the first stage, a chain-transfer agent was obtained by borylation of the terminal hydroxyl groups of polylactide. The second stage was vinyl monomer radical polymerization in the presence of p-quinone accompanied by S H 2-substitution at the boron atom.1,4-Naphthoquinone, 2,3-dimethyl-1,4-benzoquinone, duroquinone and 2,5-di-tert-butyl-1,4-benzoquinone were used as synthetic polymer chain growth mediators. It is shown that 1,4-naphthoquinone and 2,3-dimethyl-1,4-benzoquinone, similar in their characteristics, are effective agents providing the realization of reversibledeactivation radical polymerization. Realization of reversible-deactivation radical polymerization was proved with the analysis of the kinetics of block copolymerization, molecular weight characteristics and compositional homogeneity of block copolymers as well as its further capability to elongate the polymer chain. Synthesized block copolymers have a high thermal stability compared to the initial borylated polylactide.

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A porous swelling copolymeric material for improved implant fixation to bone

et al. 2023

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Most metallic commercial bone anchors, such as screws and suture anchors achieve their fixation to bone through shear of the bone located between the threads. They have several deficiencies, potentially leading to failure, which are particularly evident in low‐density bone. These include stress‐shielding resulting from mechanical properties mismatch; lack of mechanically induced remodeling and osteointegration; and when the pullout force on the anchor, during functional activities, exceeds their pullout strength, catastrophic failure occurs leaving behind large bone defects that may be hard to repair. To overcome these deficiencies, we introduced in this study a porous swelling co‐polymeric material and studied its swelling and compressive mechanical characteristics as bone anchor under different configurations. Porosity was achieved by adding a non‐dissolvable agent (NaCl) during the process of polymerization, which was later dissolved in water, leaving behind a porous structure with adequate porosity for osteointegration. Three different groups of cylindrical samples of the swelling co‐polymer were investigated. Solid, fully porous, and partially porous with a solid core and a porous outer layer. The results of the swelling and simple compression study show that the partially porous swelling co‐polymer maintains excellent mechanical properties matching those of cancellous bone, quick swelling response, and an adequate porous outer layer for mechanically induced osteointegration. These suggest that this material may present an effective alternative to conventional bone anchors particularly in low‐density bone.

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Comprehensive data on the mechanical properties and biodegradation profile of polylactide composites developed for hard tissue repairs

Cited by 12 publications

References 10 publications

Polylactide and its Composites on Various Scales of Hardness

Polylactide and its Composites on Various Scales of Hardness

New method for controlled synthesis of polylactide block copolymers: organoborane/p‐quinone system and reversible‐deactivation radical polymerization

A porous swelling copolymeric material for improved implant fixation to bone

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