Mechanical and Cytocompatibility Evaluation of UHMWPE/PCL/Bioglass® Fibrous Composite for Acetabular Labrum Implant

Anindyajati, Adhi; Boughton, Philip; Ruys, Andrew J.

doi:10.3390/ma12060916

Cited by 9 publications

(11 citation statements)

References 83 publications

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“…The average nanofiber diameter was predicted by the RSM as a linear model with a P value of 0.027 and a lack of fit value of 0.31. A linear relationship between polymer concentration and nanofiber diameter has been reported previously by Anindyajati et al 36 The ANOVA results implied that the polymer concentration and the PC proportion had significant effects on the average nanofiber diameter. However, the salt ratio showed a non-significant effect on the average nanofiber diameter.…”

Section: Resultssupporting

confidence: 80%

Morphology and electrochemical and mechanical properties of polyethylene‐oxide‐based nanofibrous electrolytes applicable in lithium ion batteries

Banitaba

Rezaei

Ensafi

2019

Polymer International

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We report the synthesis of all‐solid‐state polymeric electrolytes based on electrospun nanofibers. These nanofibers are composed of polyethylene oxide (PEO) as the matrix, lithium perchlorate (LiClO4) as the lithium salt and propylene carbonate (PC) as the plasticizer. The effects of the PEO, LiClO4 and PC ratios on the morphological, mechanical and electrochemical characteristics were investigated using the response surface method (RSM) and analysis of variance test. The prepared nanofibrous electrolytes were characterized using SEM, Fourier transform infrared, XRD and DSC analyses. Conductivity measurements and tensile tests were conducted on the prepared electrolytes. The results show that the average diameter of the nanofibers decreased on reduction of the PEO concentration and addition of PC and LiClO4. Fourier transport infrared analysis confirmed the complexation between PEO and the additives. The highest conductivity was 0.05 mS cm−1 at room temperature for the nanofibrous electrolyte with the lowest PEO concentration and the highest ratio of LiClO4. The optimum nanofibrous electrolyte showed stable cycling over 30 cycles. The conductivity of a polymer film electrolyte was 29 times lower than that of the prepared nanofibrous electrolyte with similar chemical composition. Furthermore, significant fading in mechanical properties was observed on addition of the PC plasticizer. The results obtained imply that further optimization might lead to practical uses of nanofibrous electrolytes in lithium ion batteries. © 2019 Society of Chemical Industry

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Section: Resultssupporting

confidence: 80%

Morphology and electrochemical and mechanical properties of polyethylene‐oxide‐based nanofibrous electrolytes applicable in lithium ion batteries

Banitaba

Rezaei

Ensafi

2019

Polymer International

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“…This is feasible due to the reduced melting temperature of PCL which is insufficient to start degradation of the fiber core. Previous work by Aninyajady et al describes the possibility of creating a PCL/UHMWPE composite fabric and characterizes the obtained material for use in medical implants [43,44]. The second step would be to use the composite void-free filament in a 3D printer with dual extrusion heads, such as those described in the above-referenced patents, where one of the heating heads brings the composite filament to a temperature past the melting point of the filament’s PCL matrix (65 °C) and deposits it on a pre-calculated path onto the previously-deposited PLA substrate.…”

Section: Discussionmentioning

confidence: 99%

Embedding Ultra-High-Molecular-Weight Polyethylene Fibers in 3D-Printed Polylactic Acid (PLA) Parts

et al. 2019

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This study aims to assess whether ultra-high-molecular-weight polyethylene (UHMWPE) fibers can be successfully embedded in a polylactic acid (PLA) matrix in a material extrusion 3D printing (ME3DP) process, despite the apparent thermal incompatibility between the two materials. The work started with assessing the maximum PLA extrusion temperatures at which UHMWPE fibers withstand the 3D printing process without melting or severe degradation. After testing various fiber orientations and extrusion temperatures, it has been found that the maximum extrusion temperature depends on fiber orientation relative to extrusion pathing and varies between 175 °C and 185 °C at an ambient temperature of 25 °C. Multiple specimens with embedded strands of UHMWPE fibers have been 3D printed and following tensile strength tests on the fabricated specimens, it has been found that adding even a small number of fiber strands laid in the same direction as the load increased tensile strength by 12% to 23% depending on the raster angle, even when taking into account the decrease in tensile strength due to reduced performance of the PLA substrate caused by lower extrusion temperatures.

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“…A composite of UHMWPE-PCL-Bioglass was developed as a synthetic graft by electrospinning method [133]. Bioglass was coated on UHMWPE by slurry dipping technique; melt derived glass particles were suspended in demineralized water to make a slurry with 5% w/v concentration, followed by 30 minutes in magnetic stirrer.…”

Section: Common Biomaterials For Uhmwpe Graft Modificationmentioning

confidence: 99%

Biofunctionalization of UHMWPE Polymer and Its Application in Anterior Cruciate Ligament Reconstruction

Wahed¹,

Dunstan²,

Boughton³

et al. 2020

Preprint

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The selection of biomaterials for biomedical application is a significant challenge. In the last few decades, various bioabsorbable and stable biopolymers have been applied for use as biomedical devices in orthopedic applications. Ultra-high molecular weight polyethylene (UHMWPE) has been extensively used in medical implants, notably in the bearings of hip, knee, and other joint prostheses, owing to its biocompatibility and high wear resistance. For the ACL graft, synthetic UHMWPE is an ideal candidate due to its biocompatibility and its extremely high tensile strength. Despite the appeal of new advanced materials such as carbon fiber, poly-ether-ether ketone, and other load-bearing materials, UHMWPE remains a primary load-bearing candidate material for ACL reconstructions because of its extremely high strength, the simplicity of the fabrication process, its biocompatibility, and low friction. However, some significant problems are observed in UHMWPE based implants, such as wear debris, and oxidative degradation due to the generation of free radicals when exposed to irradiation with gamma rays for grafting or sterilization. Various innovative methodologies have been developed to resolve those problems and enhance the properties of UHMWPE. In this review, we will explore in detail the methods for surface functionalization of UHMWPE and will apply these findings to the case study of UHMWPE for Anterior Cruciate Ligament repair.

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Mechanical and Cytocompatibility Evaluation of UHMWPE/PCL/Bioglass® Fibrous Composite for Acetabular Labrum Implant

Cited by 9 publications

References 83 publications

Morphology and electrochemical and mechanical properties of polyethylene‐oxide‐based nanofibrous electrolytes applicable in lithium ion batteries

Morphology and electrochemical and mechanical properties of polyethylene‐oxide‐based nanofibrous electrolytes applicable in lithium ion batteries

Embedding Ultra-High-Molecular-Weight Polyethylene Fibers in 3D-Printed Polylactic Acid (PLA) Parts

Biofunctionalization of UHMWPE Polymer and Its Application in Anterior Cruciate Ligament Reconstruction

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