Photopolymerizable resin-based 3D printed biomedical composites: Factors affecting resin viscosity

Vyas, Abhijit; Garg, Vivek; Ghosh, Subrata Bandhu; Bandyopadhyay‐Ghosh, Sanchita

doi:10.1016/j.matpr.2022.01.172

Cited by 31 publications

(18 citation statements)

References 35 publications

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“…Prepared Elium ® /SWCNT mixtures showed non-Newtonian fluid behaviour, characterised by a decrease in viscosity with an increasing shear rate. This is a typical shear-thinning behaviour reported in resins with low to moderate loadings of additives [ 39 ].…”

Section: Resultssupporting

confidence: 52%

Introduction of SWCNTs as a Method of Improvement of Electrical and Mechanical Properties of CFRPs Based on Thermoplastic Acrylic Resin

et al. 2023

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The aim of this research was to improve the electrical and mechanical properties of carbon-fibre-reinforced polymers (CFRP) based on thermoplastic acrylic resin ELIUM®, by introducing single-walled carbon nanotubes (SWCNTs) into their structure. The laminates were fabricated using the infusion technique of infiltrating the carbon fabric with the mixture of acrylic resin and SWCNTs. The addition of SWCNTs improved the electrical conductivity through the thickness of the laminate by several times compared to the laminate without modification. No defects or voids were observed in the structure of the fabricated nanocomposites. The introduction of SWCNTs into the CFRP structure increased the Young’s modulus, interlaminar shear strength and impact resistance. DMA analysis showed almost no change in the glass transition temperature of the fabricated SWCNT/CFRP nanocomposites compared to the reference laminate.

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Section: Resultssupporting

confidence: 52%

Introduction of SWCNTs as a Method of Improvement of Electrical and Mechanical Properties of CFRPs Based on Thermoplastic Acrylic Resin

et al. 2023

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“…Since bone tissues have apatite based bio‐ceramics as mineral phase in its composite form, several researches have reported using these fillers. [ 8,19 ] Composite bone scaffolds with apatite, ß‐TCP based bioceramic fillers have been tried out with SLA. [ 3,20 ] However, very limited exploration has been done with DLP method for fabrication of composite bone scaffolds.…”

Section: Introductionmentioning

confidence: 99%

Digital light processing mediated 3D printing of biocomposite bone scaffolds: Physico‐chemical interactions and in‐vitro biocompatibility

et al. 2022

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This study reports development of digital light processing (DLP) mediated 3D printed customized bone scaffolds. Bioactive fluorcanasite glass ceramic was incorporated within photocurable resin matrix and the suspensions were 3D printed towards developing composite bone scaffolds. Physico-chemical interaction in the biocomposite bone scaffolds were investigated using infrared spectroscopy, x-ray diffraction, and field emission scanning electron microscopy. Further, the mechanical properties of the composite scaffold samples were also evaluated to understand the strengths of the samples in terms of its fracture toughness, flexural strength, and compressive strength. Infrared spectroscopy results demonstrated an active interaction between the acrylate functionalities of the polymer with the bioactive fluorcanasite glass ceramic reinforcement. This was further substantiated with x-ray diffraction results, demonstrating rise in the bioactive crystalline peaks with corresponding increase in the fluorcanasite glass ceramic loading. Later, the samples were also evaluated for in-vitro cellular response in terms of cell viability, proliferation, adhesion, and interaction. The surface hydrophilicity responsible for osteogenic interaction was also studied with contact angle goniometry. With increase in fluorcanasite loading in the formulation, the hydrophilicity was found to increase over the sample surface which in turn was found to enhance cell adhesion and proliferation, as revealed byin-vitro MTT assay and also fluorescence microscopy. To establish the efficacy of DLP technique, two different porous architectural designs were 3D printed and investigated with synchrotron micro-computed tomography. The microtomographs revealed precise microarchitecture and interconnected porosity within the scaffolds.

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“…For VP formulations incorporating fillers, resins should remain stable, maintain low viscosity, and be homogeneous. 28 As shown in Figure 1 behavior to all formulations, starting with the lowest 0.025 wt %. This is consistent with the literature stating that the introduction of fillers can drastically influence the viscosity of the resins.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Three Dimensionally Printed Biobased Electrodes: Ionic Liquid and Single-Walled Carbon Nanotube Hybrids in a Vegetable Oil Matrix for Soft Robotics

Jurinovs

Barkāne

Platnieks

et al. 2023

ACS Appl. Polym. Mater.

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The field of conductive polymer composites has been growing rapidly in recent years due to the increased demand for cutting-edge applications, such as sensors, soft robots, and other high-tech devices. Despite developing some biobased components, biobased solutions that yield working prototypes are still lacking. Herein, a method for making highly biobased, electroconductive, and 3D printable composites (electrodes) is presented. A formulation composed of acrylate-functionalized rapeseed oil (70 wt %) with the addition of a photoinitiator, reactive monomer, 1-ethyl-3-methylimidazolium acetate (ionic liquid (IL)), and single-walled carbon nanotubes (SWCNT) is reported. The proposed approach eliminates the use of solvents. Combining IL with SWCNTs resulted in highly conductive (up to 38 S m–1) biobased electrodes. The in-depth conductivity analysis was done through impedance spectroscopy, 4-point resistivity, and electroconducting atomic force microscopy. The prepared resins enable the creation of complex structures with exceptional precision and accuracy, thoroughly evaluated with optical and scanning electron microscopy. Biobased electrodes created by 3D printing have mechanical qualities like stretchability and flexibility, which make them a suitable replacement for traditional electrodes in soft robotics and flexible sensors. Furthermore, a fully 3D-printed soft-robotic actuator with performance comparable to that of commonly used petroleum-based alternatives was developed.

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Photopolymerizable resin-based 3D printed biomedical composites: Factors affecting resin viscosity

Cited by 31 publications

References 35 publications

Introduction of SWCNTs as a Method of Improvement of Electrical and Mechanical Properties of CFRPs Based on Thermoplastic Acrylic Resin

Introduction of SWCNTs as a Method of Improvement of Electrical and Mechanical Properties of CFRPs Based on Thermoplastic Acrylic Resin

Digital light processing mediated 3D printing of biocomposite bone scaffolds: Physico‐chemical interactions and in‐vitro biocompatibility

Three Dimensionally Printed Biobased Electrodes: Ionic Liquid and Single-Walled Carbon Nanotube Hybrids in a Vegetable Oil Matrix for Soft Robotics

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