![]() ![]() have proven the negative influence of a geometrical boundary interface between the same material printed from two extrusion heads. ![]() Printing from two materials requires special consideration of the interface zone generated between their geometrical boundaries. Thus, there is the potential for a wide application of these methods in the clothing industry.Ī 3D printer in FDM technology allows printing with two nozzles, which creates an opportunity to produce multi-material elements. modeled the shape and composition of the yarn and produced it from PLA and TPU fibers, showing a better elasticity of the TPU fibers. Research has demonstrated its favorable morphology, hydrophilicity, and high biocompatibility. modified PLA by adding TPU this modification increased the elasticity of the electrospun fiber. PLA, thanks to its biocompatibility, is used in biomedicine. This indicates a growing interest in the possibilities of combining polymers in additive production. investigated polymer mixtures applied to form hernia meshes. When using a ready-made filament for printing, the appropriate printing parameters for the material should be selected, and with the use of one printing nozzle, standard printing is performed. Considering the FDM 3D printing method, there is an option to prepare a custom filament consisting of TPU and PLA higher TPU content results in a more outstanding tensile toughness. This method has the potential to be applied in tissue engineering. Producing blends via the solvent casting technique demonstrates the feasibility of producing a biocompatible scaffold based on TPU and PLA blends. Thermoplastic polyurethane and polylactic acid pellets were blended by hot lamination, which helped obtain distinct morphological structures and an analogically better shape-memory effect. Ĭombinations of TPU with PLA have been investigated in the relevant literature. TPU is an elastic elastomer with high performance and current consumption level and can provide a range of combinations of physical properties that can be adapted to many uses. TPU is a material in which linear polymer chains accomplish straight lines with flexible and rigid chains connected through covalent bonding. Thermoplastic polyurethane (TPU) is one of the most versatile engineering thermoplastics materials with elastomeric properties. Polylactic acid (PLA) material is a biodegradable material with a low shrinkage rate and good stability when printing large-size models. įDM technology assumes the use of thermoplastic materials for printing. Fused deposition modelling (FDM), also known as fused filament fabrication (FFF), is an AM process based on extrusion, where material as a filament is melted and selectively dispensed through a fine nozzle layer upon layer according to the slice model. Additive manufacturing (AM) technologies allow components with adjustable geometry and mechanical properties that can be used in a wide variety of industry sectors to be obtained. Rapid prototyping is a promising method that can support the efficient production of models and prototypes. Well-chosen printing parameters can prevent a drop in parts efficiency compared to component materials (depending on the materials combination). The best variants of pattern combinations were distinguished. ![]() By analyzing pairs of samples (the same patterns, different order of materials), the results for the TPU/PLA samples were better or very close to the results for PLA/TPU. A total of 12 combinations were obtained. The interaction at the interface of two surfaces of two different filaments (PLA-TPU and TPU-PLA) and six combinations of patterns were tested by printing seven replicas for each. This article aims to present the possibility of printing with PLA and TPU using commercially available filaments and software to obtain the best possible bond strength between two different polymers with respect to printing parameters, surface pattern (due to the material contact surface’s roughness), and the order of layer application. A 3D printer in FDM technology allows printing with two nozzles, which creates an opportunity to produce multi-material elements. ![]()
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