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.

中文翻译：

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使用加热的集电器对聚（偏二氟乙烯）进行熔融电写

以前对聚偏二氟乙烯 (PVDF) 的熔体电写 (MEW) 的研究产生了电活性纤维，但是，印刷五层以上是具有挑战性的。在这里，我们研究了加热收集器对调整 PVDF 射流的凝固速率的影响，使其充分粘附到每一层。需要 110°C 的收集器温度来改善纤维加工，从而产生总共 20 层纤维层。对于更高的温度和更高的层，发生了一个有趣的现象，其中纤维的交点合并成直径为 206 ± 52 μm（26G，150°C 收集器温度，2000 mm/min，x - 和y 方向上的10 层）的周期性球体-方向）。加热收集器是 MEW 打印机的一个重要组成部分，它允许具有高熔点的聚合物可加工增加层数。