High-Frequency Rheological and Piezo-Voltage Waveform Characterization of Inkjet-Printed Polymer-Based Dopant-Source Inks

Hussain, Zulkifl; Kiaee, Zohreh; Nazarzadeh, Milad; Reichel, Christian; Tepner, Sebastian; Tuladhar, Tri; Jahn, Mike; Keding, Roman

doi:10.3390/mi14010080

Cited by 4 publications

(5 citation statements)

References 33 publications

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“…The rheology of polymer-based dopant-source inks is decisive for obtaining defect-free droplets [ 187 , 188 ]. Determination of the shear viscosity is not enough for the jetting performances, short timescale parameters are also necessary to evaluate the stability of ink droplets.…”

Section: Rheology As a Prerequisite For Bioink Formulation And Optimi...mentioning

confidence: 99%

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Rheology as a Tool for Fine-Tuning the Properties of Printable Bioinspired Gels

Bercea¹

2023

Molecules

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Over the last decade, efforts have been oriented toward the development of suitable gels for 3D printing, with controlled morphology and shear-thinning behavior in well-defined conditions. As a multidisciplinary approach to the fabrication of complex biomaterials, 3D bioprinting combines cells and biocompatible materials, which are subsequently printed in specific shapes to generate 3D structures for regenerative medicine or tissue engineering. A major interest is devoted to the printing of biomimetic materials with structural fidelity after their fabrication. Among some requirements imposed for bioinks, such as biocompatibility, nontoxicity, and the possibility to be sterilized, the nondamaging processability represents a critical issue for the stability and functioning of the 3D constructs. The major challenges in the field of printable gels are to mimic at different length scales the structures existing in nature and to reproduce the functions of the biological systems. Thus, a careful investigation of the rheological characteristics allows a fine-tuning of the material properties that are manufactured for targeted applications. The fluid-like or solid-like behavior of materials in conditions similar to those encountered in additive manufacturing can be monitored through the viscoelastic parameters determined in different shear conditions. The network strength, shear-thinning, yield point, and thixotropy govern bioprintability. An assessment of these rheological features provides significant insights for the design and characterization of printable gels. This review focuses on the rheological properties of printable bioinspired gels as a survey of cutting-edge research toward developing printed materials for additive manufacturing.

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Section: Rheology As a Prerequisite For Bioink Formulation And Optimi...mentioning

confidence: 99%

“…Thus, the jetting behavior was correlated with the elastic modulus determined at 5 kHz (using a special device, a piezoelectric axial vibrator rheometer) [ 188 ]. The presence of air bubbles is detrimental to inkjet printing as they can prevent ink ejection from the nozzles [ 187 ].…”

Section: Rheology As a Prerequisite For Bioink Formulation And Optimi...mentioning

confidence: 99%

Rheology as a Tool for Fine-Tuning the Properties of Printable Bioinspired Gels

Bercea¹

2023

Molecules

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“…Today, ink-jet printing technology is one of the simplest and most popular digital printing techniques, allowing printing on the scale of "short runs" [16]. In the ink-jet printing process, there is a controlled ejection of the liquid on the substrate in a very precise and controlled way [17].…”

Section: Introductionmentioning

confidence: 99%

“…The final print quality is influenced by several parameters, mainly the properties of the ink, the substrate, and the printing process parameters. The properties of the ink, such as viscosity and rheology, influence the ink flow in the printhead [16,23]. Next, the surface tension, ink flow, and viscosity influence the drop formation in the printhead [24].…”

Section: Introductionmentioning

confidence: 99%

Study on the Printability of Starch-Based Films Using Ink-Jet Printing

Żołek-Tryznowska,

Piłczyńska,

Murawski

et al. 2024

Materials

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Starch-based films are a valuable alternative to plastic materials that are based on fossil and petrochemical raw resources. In this study, corn and potato starch films with 50% glycerol as a plasticizer were developed, and the properties of films were confirmed by mechanical properties, surface free energy, surface roughness, and, finally, color and gloss analyses. Next, the films were overprinted using ink-jet printing with quick response (QR) codes, text, and pictograms. Finally, the print quality of the obtained prints was determined by optical density, color parameters, and the visual evaluation of prints. In general, corn films exhibit lower values of mechanical parameters (tensile strength, elongation at break, and Young Modulus) and water transition rate (11.1 mg·cm−2·h−1) than potato starch film (12.2 mg·cm−2·h−1), and water solubility is 18.7 ± 1.4 and 20.3 ± 1.2% for corn and potato film, respectively. The results obtained for print quality on starch-based films were very promising. The overprinted QR codes were quickly readable by a smartphone. The sharpness and the quality of the lettering are worse on potato film. At the same time, higher optical densities were measured on potato starch films. The results of this study show the strong potential of using starch films as a modern printing substrate.

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“…The team attempted to utilize readily available components, resulting in a system that can be easily replicated by anyone. Hussain et al [ 19 ] focused on a non-Newtonian polymer ink. Due to the very small time scale of the physics of the flow in inkjet head, conventional representation of the complex viscosity and shear modulus need to be analyzed to higher frequency and this work presented inkjet stability based on these characteristics.…”

mentioning

confidence: 99%