Influence of the Halloysite Nanotube (HNT) Addition on Selected Mechanical and Biological Properties of Thermoplastic Polyurethane
Open Access
- 29 June 2021
- Vol. 14 (13), 3625
- https://doi.org/10.3390/ma14133625
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).Keywords
This publication has 36 references indexed in Scilit:
- Biofunctional Glycol-Modified Polyethylene Terephthalate and Thermoplastic Polyurethane Implants by Extrusion-Based Additive Manufacturing for Medical 3D Maxillofacial Defect ReconstructionPolymers, 2020
- 3D Printing of Drug-Loaded Thermoplastic Polyurethane Meshes: A Potential Material for Soft Tissue Reinforcement in Vaginal SurgeryPharmaceutics, 2020
- Study of selected physical, chemical and biological properties of selected materials intended for contact with human bodyPJCT, 2019
- A 3D printed melt-compounded antibiotic loaded thermoplastic polyurethane heart valve ring design: an integrated framework of experimental material tests and numerical simulationsInternational Journal of Polymeric Materials and Polymeric Biomaterials, 2018
- Fabrication and Characterization of Flexible Medical-Grade TPU Filament for Fused Deposition Modeling 3DP TechnologyPolymers, 2018
- Biodegradable, thermoplastic polyurethane grafts for small diameter vascular replacementsActa Biomaterialia, 2014
- Impact of aging conditions on mechanical properties of thermoplastic polyurethaneMaterials & Design (1980-2015), 2010
- Elasticity and inelasticity of thermoplastic polyurethane elastomers: Sensitivity to chemical and physical structurePolymer, 2010
- Study of UV-aging of thermoplastic polyurethane materialMaterials Science and Engineering: A, 2010
- Modification, crosslinking and reactive electrospinning of a thermoplastic medical polyurethane for vascular graft applicationsActa Biomaterialia, 2010