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Printability Study of a Conductive Polyaniline/Acrylic Formulation for 3D Printing.

ABSTRACT: There is need for developing novel conductive polymers for Digital Light Processing (DLP) 3D printing. In this work, photorheology, in combination with Jacobs working curves, efficaciously predict the printability of polyaniline (PANI)/acrylate formulations with different contents of PANI and photoinitiator. The adjustment of the layer thickness according to cure depth values (Cd) allows printing of most formulations, except those with the highest gel point times determined by photorheology. In the working conditions, the maximum amount of PANI embedded within the resin was ≃3 wt% with a conductivity of 10-5 S cm-1, three orders of magnitude higher than the pure resin. Higher PANI loadings hinder printing quality without improving electrical conductivity. The optimal photoinitiator concentration was found between 6 and 7 wt%. The mechanical properties of the acrylic matrix are maintained in the composites, confirming the viability of these simple, low-cost, conductive composites for applications in flexible electronic devices.

SUBMITTER: Arias-Ferreiro G

PROVIDER: S-EPMC8272001 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature

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Printability Study of a Conductive Polyaniline/Acrylic Formulation for 3D Printing.

Arias-Ferreiro Goretti G Ares-Pernas Ana A Lasagabáster-Latorre Aurora A Aranburu Nora N Guerrica-Echevarria Gonzalo G Dopico-García M Sonia MS Abad María-José MJ

Polymers 20210623 13

There is need for developing novel conductive polymers for Digital Light Processing (DLP) 3D printing. In this work, photorheology, in combination with Jacobs working curves, efficaciously predict the printability of polyaniline (PANI)/acrylate formulations with different contents of PANI and photoinitiator. The adjustment of the layer thickness according to cure depth values (<i>C<sub>d</sub></i>) allows printing of most formulations, except those with the highest gel point times determined by ...[more]

PMID: 34201892

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Project description:BackgroundThe advancement of three-dimensional (3D) food printing technology is significantly influencing the food processing industry. The present study utilized extrusion 3D printing to create a gluten-free dough composed of little millet flour (LMF), amaranth seed flour (ASF) and curry leaf flour (CLF). The primary objective was to elucidate the effects of various extrusion-based 3D printing conditions, including extruder nozzle diameter (ND), extrusion rate (ER), print speed (PS) and layer height (LH) on the printability parameters of the dough.ResultsIn this study, three formulations of composite dough were prepared (i.e., S1, S2 and S3) by varying LMF, ASF and CLF compositions; among which S1 composite (LMF:ASF:CLF::30:60:10 w/w) was found to have comparable viscoelastic properties with the wheat dough. Central composite design (CCD) was selected with 30 experimental runs and 3D dough samples were printed using S1 composite by varying ND, ER, PS and LH. Principal component analysis of the printed samples accounted for 82.75% of variability and classified the samples into three confidence ellipses. From the results of the CCD model, four solution parameters in terms of ND:ER:PS:LH::mm: pulse μL-1:mm s-1:%, namely, P1 (1.8:115:8:70), P2 (1.6:115:7.8:65), P3 (2:100:7.8:55) and P4 (2:105:6.2:75), with high desirability value (> 0.85) were selected for sample 3D printing and post-baking analysis. The P1 sample was found to have least print deformations, highest print fidelity (85.66%), and lowest hardness (55.95 N) and fracturability (39.66 N) values, and hence was selected as optimized product.ConclusionThe present study provides parametric solutions for efficient 3D printing of gluten-free composite dough, aligning with the increasing dietary preferences and demand of novel functional customized foods. © 2024 The Author(s). Journal of the Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Dataset Information

Printability Study of a Conductive Polyaniline/Acrylic Formulation for 3D Printing.

Publications

Printability Study of a Conductive Polyaniline/Acrylic Formulation for 3D Printing.

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