Melt electrowriting of poly(vinylidene difluoride) using a heated collector

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Abstract

Previous research on the melt electrowriting (MEW) of poly(vinylidene difluoride) (PVDF) resulted in electroactive fibers, however, printing more than five layers is challenging. Here, we investigate the influence of a heated collector to adjust the solidification rate of the PVDF jet so that it adheres sufficiently to each layer. A collector temperature of 110°C is required to improve fiber processing, resulting in a total of 20 fiber layers. For higher temperatures and higher layers, an interesting phenomenon occurred, where the intersection points of the fibers coalesced into periodic spheres of diameter 206 ± 52 μm (26G, 150°C collector temperature, 2000 mm/min, 10 layers in x- and y-direction).The heated collector is an important component of a MEW printer that allows polymers with a high melting point to be processable with increased layers.

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Kade, J. C., Otto, P. F., Luxenhofer, R., & Dalton, P. D. (2021). Melt electrowriting of poly(vinylidene difluoride) using a heated collector. Polymers for Advanced Technologies, 32(12), 4951–4955. https://doi.org/10.1002/pat.5463

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