1. Influence of the Halloysite Nanotube (HNT) Addition on Selected Mechanical and Biological Properties of Thermoplastic Polyurethane
- Author
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Maciej Mrówka, Mirosława Pawlyta, Małgorzata Szymiczek, and Tomasz Machoczek
- Subjects
Technology ,Nanotube ,Materials science ,thermoplastic polyurethane (TPU) ,Young's modulus ,02 engineering and technology ,mechanical properties ,engineering.material ,010402 general chemistry ,01 natural sciences ,Halloysite ,Article ,law.invention ,Thermoplastic polyurethane ,symbols.namesake ,halloysite nanotubes (HNT) ,law ,General Materials Science ,Composite material ,biological properties ,Microscopy ,QC120-168.85 ,Nanocomposite ,nanocomposite ,Fused deposition modeling ,QH201-278.5 ,biomaterial ,Biomaterial ,3D printing ,Engineering (General). Civil engineering (General) ,021001 nanoscience & nanotechnology ,TK1-9971 ,0104 chemical sciences ,Descriptive and experimental mechanics ,tribology ,engineering ,symbols ,processing ,Electrical engineering. Electronics. Nuclear engineering ,TA1-2040 ,Elongation ,0210 nano-technology - Abstract
Halloysite nanotube (HNT) additions to the thermoplastic polyurethane (TPU) system were thoroughly evaluated in this study. The resultant composites have been designed for future personalized intervertebral disc implant applications, which requires additional technology to obtain the appropriate geometry unique to each patient. These requirements can be fulfilled using 3D printing. In this work, a technology was developed to produce filaments for fused deposition modeling (FDM). Nanocomposites were prepared using variable HNT content (1, 2, and 3 wt.%). The nanostructure of the resultant composites was confirmed using scanning transmission electron microscopy (STEM). Mechanical tests were used to measure the tensile modulus, stress, and elongation the composites and TPU matrix. Nanocomposites with 2% HNT content were able to withstand 26% increased stress and 50% increased elongation compared to pure TPU before fracturing in addition to a 13% reduction in the friction coefficient. A MTT cytotoxicity assay confirmed the cytotoxicity of all tested materials against human epidermal keratinocyte cells (HaCaT). more...
- Published
- 2021
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