Nanostructural interface and strength of polymer composite scaffolds applied to intervertebral bone

Oladapo, Bankole I.; Ismail, Sikiru Oluwarotimi; Adebiyi, Aderogba V.; Omigbodun, Francis T.; Olawumi, Mattew A.; Olawade, David B.

doi:10.1016/j.colsurfa.2021.127190

Cited by 28 publications

(12 citation statements)

References 53 publications

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“…Lattice structures have been intensively studied for their lightweight properties, high energy absorption, and high stiffness-to-weight ratio. Lattice structures are widely used in a variety of applications such as structural components (e.g., in the aerospace [ 1 ] and automotive industries [ 2 ]), bone-substituting biomaterials or implants [ 3 ], impact absorption to protect structures and objects [ 4 ], and vibration isolation [ 5 ]. This is owing to the fact that lattice structures possess certain combinations of geometrical features, mechanical properties, and physical properties that make them suitable for a wide range of applications (e.g., industrial and medical applications) and allow for the development of structures with improved performance [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, incorporating reinforcement into AM materials certainly uncovers new advanced materials (e.g., composite materials). This allows the manufacturing of composites with enhanced functionality and performance [ 10 ], e.g., mechanical [ 11 , 12 , 13 , 14 ], biological [ 3 , 15 , 16 , 17 , 18 , 19 ], electrical [ 20 ], thermal [ 17 , 20 ], and chemical performance [ 18 ]. A variety of additive manufacturing technologies, including fused deposition modeling (FDM), stereolithography (SLA), digital light processing (DLP), electron beam melting (EBM), and selective laser sintering (SLS), have been used to 3D print lattice structures.…”

Section: Introductionmentioning

confidence: 99%

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Compression Performance and Failure Analysis of 3D-Printed Carbon Fiber/PLA Composite TPMS Lattice Structures

et al. 2022

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Triply periodic minimum surface (TPMS)-based lattice structures have gained interest for their outstanding capacity to absorb energy, their high load-bearing capacity, and their high surface-to-volume ratio. This study considered three TPMS cell topologies, including Diamond, Gyroid, and Primitive. The FDM process was used to print the lattice structures with two materials: pure polylactic acid (PLA) and carbon fiber-reinforced PLA (PLA + CF). The influence of carbon fiber (CF) incorporation, unit cell type (topologies) and size, and relative density (RD) on mechanical properties and failure patterns were explored comprehensively under uniaxial compression testing. The results demonstrate a change in the compressive modulus (0.09 to 0.47 GPa), compressive strength (2.98 to 13.89 MPa), and specific energy absorption (SEA) (0.14 MJ/m3/g to 0.58 MJ/m3/g) due to the influence of CF incorporation, cell type and size, and RD. Results indicate that the Diamond structure outperformed both Primitive and Gyroid structures in terms of compressive modulus and strength, and SEA. All the CF-based TPMS structures showed a higher compressive modulus. Compressive strength and energy absorption capacity were both slightly enhanced in most PLA + CF-based Diamond structures. On the contrary, Gyroid and Primitive structures showed better performance for pure PLA-based structures in terms of compression strength and specific absorption energy.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compression Performance and Failure Analysis of 3D-Printed Carbon Fiber/PLA Composite TPMS Lattice Structures

et al. 2022

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“…The obtained grid-like, porous scaffold was crosslinked with 100 Mm calcium chloride solution and freeze-dried prior to the tension test. The freeze-dried samples were tested according to Oladapo et al's [49] described method for universal testing machine. The test was carried out in the tensile test method using INSTRON 5982 (INSTRON, USA) with a constant displacement of 0.5 mm/min at room temperature.…”

Section: Methodsmentioning

confidence: 99%

Mechanical Behaviour Evaluation of Porous Scaffold for Tissue-Engineering Applications Using Finite Element Analysis

et al. 2022

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In recent years, finite element analysis (FEA) models of different porous scaffold shapes consisting of various materials have been developed to predict the mechanical behaviour of the scaffolds and to address the initial goals of 3D printing. Although mechanical properties of polymeric porous scaffolds are determined through FEA, studies on the polymer nanocomposite porous scaffolds are limited. In this paper, FEA with the integration of material designer and representative volume elements (RVE) was carried out on a 3D scaffold model to determine the mechanical properties of boron nitride nanotubes (BNNTs)-reinforced gelatin (G) and alginate (A) hydrogel. The maximum stress regions were predicted by FEA stress distribution. Furthermore, the analysed material model and the boundary conditions showed minor deviation (4%) compared to experimental results. It was noted that the stress regions are detected at the zone close to the pore areas. These results indicated that the model used in this work could be beneficial in FEA studies on 3D-printed porous structures for tissue engineering applications.

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“…[ 45 ] PEEK Num1 = 40 Num1 = 273 ± 40 NA NA Num2 = 50 Num2 = 357 ± 21 Num3 = 60 Num3 = 573 ± 21 Oladapo et al. [ 46 ] PEEK NA NA NA OT = 5790.7 K = 165.3 G = 291.7 SP = 751.2 …”

Section: The Design Architecture Bone Scaffoldmentioning

confidence: 99%

“…Oladapo et al. [ 46 ] investigate the design influences on bone scaffold constructs generated and developed with composite PEEK materials. Some of the microarchitectural designs developed include the octet-truss, kelvin, gyroid, and Schwarz primal.…”

Section: The Design Architecture Bone Scaffoldmentioning

confidence: 99%

Application of fused deposition modeling (FDM) on bone scaffold manufacturing process: A review

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Nanostructural interface and strength of polymer composite scaffolds applied to intervertebral bone

Cited by 28 publications

References 53 publications

Compression Performance and Failure Analysis of 3D-Printed Carbon Fiber/PLA Composite TPMS Lattice Structures

Compression Performance and Failure Analysis of 3D-Printed Carbon Fiber/PLA Composite TPMS Lattice Structures

Mechanical Behaviour Evaluation of Porous Scaffold for Tissue-Engineering Applications Using Finite Element Analysis

Application of fused deposition modeling (FDM) on bone scaffold manufacturing process: A review

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