Fig. 1: Preceramic polymer (PCP)-block copolymer (BCP) inks and nanofiber development. | npj Advanced Manufacturing

Fig. 1: Preceramic polymer (PCP)-block copolymer (BCP) inks and nanofiber development.

From: Nanofibrous ceramics via the additive manufacturing of self-assembling preceramic polymer and block copolymer feedstocks

Fig. 1

A Chemical composition of preceramic-block copolymer ink that contains a BCP with poly(methyl methacrylate) (PMMA) and poly(n-butyl acrylate) (PnBA) blocks and a PCP (polycarbosilane, PCS), B TEM micrograph of an as-printed filament with a representative schematic showing the worm-like PCP/BCP morphology, with particular attention given to the arrangement of the PCP/BCP chains in the rightmost cartoon. Scale bar is 2 µm. TEM micrographs (left) and corresponding EDS spectra (right) of PCP/BCP printed filaments at chosen temperatures along the curing cycle: C and F 80 °C, D and G 100 °C, and E and H 160 °C. Scale bars are 2 µm. Polar histograms for nanofiber diameter variations in I nozzle diameter, J final cure temperature, and K curing ramp rate. Radial scales are given in microns. L–N SEM micrograph of an aligned tow of ceramic nanofibers.

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