Abstract This study investigates the effects of process parameters on quality products fabricated by fused deposition modeling (FDM), such as surface roughness and tensile strength. Polylactic acid (PLA) samples were built a FDM machine at various layer thicknesses, nozzle temperature head velocity. The effect cooling during was also considered. experimental performed according to mixed type Taguchi L16 orthogonal array. effectiveness each parameter discussed an analysis variance (ANOVA)....

Abstract In this study, multifunctional polymer nanocomposite scaffolds were fabricated by the fused deposition method (FDM) for biomedical applications. First, halloysite nanotube reinforced (1–5 wt%) polylactic acid filaments prepared melt mixing process. For selected compositions, HNT was loaded with metformin (MET) electrostatic interactions. The characterization of observed Fourier transform infrared spectroscopy, X‐ray photoelectron differential scanning calorimetry, and...

ABSTRACT Spinal fusion cages play a crucial role in stabilizing the spine and promoting bone growth degenerative disorders. Recent advancements biodegradable polymer‐based have introduced materials with shape memory properties, enabling minimally invasive implantation improved adaptability. This study focuses on development of 4D‐printed PLA/PCL blend spinal cages, investigating their thermal, mechanical, biodegradation, alongside surface wettability through contact angle measurements. The...

Abstract This study investigates the multifunctional properties of three‐dimensional (3D)‐printed Polylactic acid (PLA) and Poly‐ε‐caprolactone (PCL) scaffolds reinforced with graphene oxide (GO) for advanced biomedical applications utilizing fused filament fabrication method. PLA/PCL (80:20) was selected its balance stiffness flexibility, while GO incorporated at varying concentrations (0.5 weight percent (wt%), 1, 2, 3 wt%). Composite filaments were produced through melt blending...

Abstract This study examines the mechanical performance of novel PLA/PCL intervertebral cage designs for lumbar spinal fusion, using FEA and experimental compression testing. Four 3D-printed with varying graft window sizes structural volumes were tested load-bearing capacity. Experimental compressive strengths ranged from 43.36 MPa Cage 4–50.43 3, all meeting requirements applications. 2, a dual-window design, exhibited optimal load distribution highest strength (50.00 MPa), indicating...

Abstract This study presents the improvement of mechanical properties and cell viability polylactic acid/halloysite nanotube (PLA/HNT) scaffolds that were fabricated by foam injection molding. In this regard, firstly PLA HNT compounded on a twin screw extruder melt mixing method within loadings 1, 3, 5 wt%. Then, neat PLA/HNT pellets injected molded to obtain tensile test samples. The determined methyl‐thiazol‐tetrazolium technique was used for determination viability. results have shown...

Polypropylene (PP)/zinc oxide (ZnO) nanocomposites were prepared by melt compounding. Prior compounding, surface of the particles modified with different compatilibizers such as silane and stearic acid. Modification was also done coating maleic anhydride grafted styrene-ethylene-butylene-styrene (SEBS-g-MA) block copolymer dissolved in toluene. Specimens tensile test, impact antibacterial efficiency test obtained injection molding. The results showed that acid containing composites gave...

Antibacterial property for the plastic products is very important due to their wide spread usage in many areas close human health such as a child toy or food package.There are some methods make polymers antibacterial ionizing radiation but they can be still infected by micro organisms during of them.The best and easy way obtain melt mixing with agents.In this study, nano TiO2 ZnO particles were mixed polypropylene high density polyethylene twin screw extruder.Silane was applied prior order...

The present study focused on the optimization of injection molding process parameters to minimize thermal residual stresses in surface regions polystyrene and high density polyethylene parts. Process such as melt temperature, mold temperature cooling time were considered variables their effects parts investigated by utilizing design experiment (DOE), Taguchi analysis variance (ANOVA) methods. As a result, most important for PS HDPE found respectively.

Purpose The purpose of this study was to bring a new structural hybrid design approach improve the mechanical and biological properties bone scaffolds fabricated by laser powder bed fusion, selective melting (SLM). Design/methodology/approach In designing scaffolds, different unit cells were used such as dodecahedron (DCH), grid (G), octet-truss (OCT) with partially dense (PDsl) fully (FDsl) surface layers. After fabrication on SLM machine, compression test cell viability applied observe...

In this study, a method for manufacturing polymer/metal hybrid structure is presented in which traditional plastic injection machine was converted to forming (PIF).In method, deforming of the metal and adhering polymer done one step.In experimental special mold within rectangular cavity used during PIF process.Aluminum plates different thicknesses were as parts structure.The injected polymers pure polystyrene elastomer-added polystyrene.The deformability Al examined under pressures.In order...

Abstract An experimental study of residual thermal stresses has been carried out in injection molded virgin and recycled high density polyethylene (HDPE) blends. Effects blend concentrations on were investigated under different conditions such as melt temperature, mold temperature cooling time. Layer removal technique was used for measuring stresses. In order to determine the relation between material characteristic HDPE blends, mechanical morphological properties blends also investigated....

Abstract Polyropylene (PP)- zinc oxide (ZnO) nanocomposites were obtained by a melt mixing process. Organo silane–modified ZnO and untreated ZnO, compositions with added stearic acid prepared in twin screw extruder. Thermal properties of the composites determined differential scanning calorimetry. The foamed conventional injection molding using chemical foaming agent azodicarbonamide. effects addition coupling on cell morphology, tensile strength, weight reduction investiagted....

Abstract Controlling fiber orientation and distribution in plastic injection of glass reinforced polymers is important due to the improvement properties material. Variation shear layer thickness affects moldings. In this study, 30 % polypropylene was injected under various molding conditions order increase which parallel flow direction. The experimental study carried out according Taguchi L9 orthogonal array. mold temperature, nozzle temperature rate were chosen as input parameters taken...

Abstract Polylactic acid (PLA) is one of the important materials for orthopedic regenerative engineering applications due to its biodegradability and biocompatibility. Nonetheless, PLA may show insufficient mechanical strength some bone replacement applications. Halloysite nanotube (HNT) non-toxic, biocompatible reinforcement improving biological properties tissue In this study, PLA/HNT scaffolds were prepared by chemical foam injection molding process. Laser surface texturing was applied on...

Polymer foams have wide application area due to their light weight, resistance impact, ability of insulation, and damping properties for specific applications.In this study, two different thermoplastic materials, polylactic acid (PLA) polypropylene (PP), were used compare foaming in foam injection molding.Chemical agent, azodicarbonamide, was molding tensile test samples obtained.Mechanical strength the polymer investigated by test.Scanning electron microscopy applied order observe...

Homogenous dispersion of the nano particles in polymer matrix is a key factor order to achieve enhanced properties nanocomposites. Dispersion or exfoliation clay difficult during melt mixing. In this study, montmorillonite (MMT) polypropylene (PP) was done by using chemical foaming agent mixing process. Chemical (CFA) added (1 %wt.) PP/MMT nanocomposites were prepared on twin screw extruder. Then, injection molding granulated obtain tensile test samples. Thermal and morphological...

Abstract Plastic injection forming (PIF) is an alternative sheet metal method for complex geometrical parts with dimensions in low tolerance. This a combination of molding and hydroforming which molten polymer material has been injected over via plastic machine. In this study, aluminum sheets 1.5 mm thick were shaped by PIF at various pressures, melt temperatures speed. The effects these parameters on the formability investigated using experimental design technique. thinning rate, flange...