Photo-Curing Kinetics of 3D-Printing Photo-Inks Based on Urethane-Acrylates

Bakhshi, Hadi; Kuang, Guanxing; Wieland, Franziska; Meyer, Wolfdietrich

doi:10.3390/polym14152974

Cited by 9 publications

(3 citation statements)

References 33 publications

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“…Due to the high precision and rapid polymerization rate of photocuring-based technology, models can be printed quickly. 31 This cutting-edge technology exhibits impressive attributes, boasting high printing resolution and speed, while circumventing issues like nozzle clogging or shear stress that could impact cell viability. However, in biomedical applications of bioprinting, good biocompatibility is the most important property of materials.…”

Section: D Bioprinting Technologymentioning

confidence: 99%

3D Bioprinting: An Important Tool for Tumor Microenvironment Research

Li,

Liu,

et al. 2023

IJN

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The tumor microenvironment plays a crucial role in cancer development and treatment. Traditional 2D cell cultures fail to fully replicate the complete tumor microenvironment, while mouse tumor models suffer from time-consuming procedures and complex operations. However, in recent years, 3D bioprinting technology has emerged as a vital tool in studying the tumor microenvironment. 3D bioprinting is a revolutionary biomanufacturing technique that involves layer-by-layer stacking of biological materials, such as cells and biomaterial scaffolds, to create highly precise 3D biostructures. This technology enables the construction of intricate tissue and organ models in the laboratory, which are utilized for biomedical research, drug development, and personalized medicine. The application of 3D bioprinting has brought unprecedented opportunities to fields such as cancer research, tissue engineering, and organ transplantation. It has opened new possibilities for addressing real-world biological challenges and improving medical treatment outcomes. This review summarizes the applications of 3D bioprinting technology in the context of the tumor microenvironment, aiming to explore its potential impact on cancer research and treatment. The use of this cutting-edge technology promises significant advancements in understanding cancer biology and enhancing medical interventions.

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Section: D Bioprinting Technologymentioning

confidence: 99%

3D Bioprinting: An Important Tool for Tumor Microenvironment Research

Li,

Liu,

et al. 2023

IJN

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“…Polyacrylates find a wide range of applications, being important ingredients in coatings, paints, casts, adhesives, 3D printing resins, hydrogels, etc. [1][2][3][4][5][6][7][8], requiring control over the material properties (i.e., transparency, gloss, haziness, curing temperature and glass transition temperature). The wide range of applications has, in recent years, increased the interest in deeply understanding the kinetic parameters of acrylates [9,10].…”

Section: Introductionmentioning

confidence: 99%

Improved Approach for ab Initio Calculations of Rate Coefficients for Secondary Reactions in Acrylate Free-Radical Polymerization

Lugo,

Edeleva,

Van Steenberge

et al. 2024

Polymers

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Secondary reactions in radical polymerization pose a challenge when creating kinetic models for predicting polymer structures. Despite the high impact of these reactions in the polymer structure, their effects are difficult to isolate and measure to produce kinetic data. To this end, we used solvation-corrected M06-2X/6-311+G(d,p) ab initio calculations to predict a complete and consistent data set of intrinsic rate coefficients of the secondary reactions in acrylate radical polymerization, including backbiting, β-scission, radical migration, macromonomer propagation, mid-chain radical propagation, chain transfer to monomer and chain transfer to polymer. Two new approaches towards computationally predicting rate coefficients for secondary reactions are proposed: (i) explicit accounting for all possible enantiomers for reactions involving optically active centers; (ii) imposing reduced flexibility if the reaction center is in the middle of the polymer chain. The accuracy and reliability of the ab initio predictions were benchmarked against experimental data via kinetic Monte Carlo simulations under three sufficiently different experimental conditions: a high-frequency modulated polymerization process in the transient regime, a low-frequency modulated process in the sliding regime at both low and high temperatures and a degradation process in the absence of free monomers. The complete and consistent ab initio data set compiled in this work predicts a good agreement when benchmarked via kMC simulations against experimental data, which is a technique never used before for computational chemistry. The simulation results show that these two newly proposed approaches are promising for bridging the gap between experimental and computational chemistry methods in polymer reaction engineering.

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“…Overall, high toughness is either due to the filler/second phase or the network structure. Certain thermosetting resins exhibit a high toughness and ductile behaviour due to either their low crosslink density or their molecular structure, such as urethane resins, but their strength and stiffness fall short for structural engineering applications [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Engineering Toughness in a Brittle Vinyl Ester Resin Using Urethane Acrylate for Additive Manufacturing

Idrees,

Yoon,

Palmese

et al. 2023

Polymers

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Thermosetting polymers tend to have a stiffness–toughness trade-off due to the opposing relationship of stiffness and toughness on crosslink density. We hypothesize that engineering the polymer network, e.g., by incorporating urethane oligomers, we can improve the toughness by introducing variations in crosslink density. In this work, we show that a brittle methacrylated Bis-GMA resin (known as DA2) is toughened by adding a commercial urethane acrylate resin (known as Tenacious) in different proportions. The formulations are 3D printed using a vat photopolymerization technique, and their mechanical, thermal, and fracture properties are investigated. Our results show that a significant amount of Tenacious 60% w/w is required to produce parts with improved toughness. However, mechanical properties drop when the Tenacious amount is higher than 60% w/w. Overall, our results show that optimizing the amount of urethane acrylate can improve toughness without significantly sacrificing mechanical properties. In fact, the results show that synergistic effects in modulus and strength exist at specific blend concentrations.

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Photo-Curing Kinetics of 3D-Printing Photo-Inks Based on Urethane-Acrylates

Cited by 9 publications

References 33 publications

3D Bioprinting: An Important Tool for Tumor Microenvironment Research

3D Bioprinting: An Important Tool for Tumor Microenvironment Research

Improved Approach for ab Initio Calculations of Rate Coefficients for Secondary Reactions in Acrylate Free-Radical Polymerization

Engineering Toughness in a Brittle Vinyl Ester Resin Using Urethane Acrylate for Additive Manufacturing

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