Nanomanufacturing, Volume 2, Issue 4
2022 December - 6 articles
Cover Story: Three-dimensional printing is a modern and easily adaptable technology for the manufacturing polymer objects of complex geometry with desired properties. Single-walled carbon nanotubes (SWCNTs) are an ideal filler for the fabrication of conducting polymer composites with a controlled electromagnetic response. We offer the extrusion of crushed polystyrene/SWCNT composites to prepare pore-free filaments with highly dispersed nanotubes for 3D fused deposition modeling (FDM). The proposed technique successfully operates at SWCNT concentrations from 0.0025 to 2 wt.% and makes it possible to reduce the electrical percolation threshold to 0.1 wt.% of the filler. At 0.0025–0.025 wt.% SWCNT content, the dielectric permittivity of the 3D printed polystyrene composite increases 1.5–2-fold in the frequency range from 10 kHz to 4 GHz. View this paper - Issues are regarded as officially published after their release is announced to the table of contents alert mailing list .
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