Abstract
3D printing in the textile and fashion industry is a new emerging technology. Applications of 3D printing for designing clothes and other wearable accessories require tribological and biological understanding of 3D printing plastics against the complex human skin to mitigate skin-friction related ailments such as calluses and blisters. This study provides tribological insight in search of an optimal 3D printable material that has minimal friction against the skin. Two low friction 3D printable materials, thermoplastic polyurethane (TPU) and polyamide (TPA) were chosen and tribological testing was carried out against a water responsive skin model. The skin model was synthesized using a gelatine based model made with cotton and crosslinked with glutaraldehyde. Tribological testing of TPU/TPA against the skin model in dry and wet conditions were made. The higher coefficient of friction (COF) was observed in the wet condition compared to the dry condition. To overcome the higher friction, TPA/TPU-sodium polyacrylate composites were prepared by heat pressing that significantly reduced COF of TPU and TPA by ∼ 40% and 75%, respectively, in wet conditions.
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The authors acknowledge the financial support from US National Science Foundation (1852578) and startup funding from the Department of Mechanical Engineering at the University of Nevada, Reno.
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Pradeep L. MENEZES. He received his Ph.D. in materials engineering from Indian Institute of Science, Bangalore India in 2008. Later he joined as post-doctoral researcher at University of Pittsburgh and then University of Wisconsin-Milwaukee. He is an assistant professor in the Mechanical Engineering Department at University of Nevada Reno since 2015. His research interests are tribology, surface engineering, manufacturing, and materials science.
Ashish K. KASAR. He is a Ph.D. student in mechanical engineering at University of Nevada, Reno. Prior to Ph.D., he received his bachelor’s degree in metallurgical engineering from National Institute of Technology, Raipur and master’s degree in materials science and engineering from Indian Institute of Technology, Kanpur. His research interests are tribology, tribocorrosion, and materials science.
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Kasar, A.K., Chan, A., Shamanaev, V. et al. Tribological interactions of 3D printed polyurethane and polyamide with water-responsive skin model. Friction 10, 159–166 (2022). https://doi.org/10.1007/s40544-020-0472-2
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DOI: https://doi.org/10.1007/s40544-020-0472-2