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Needleless electrospinning with twisted wire spinneret

机译：绞线喷丝头无针电纺

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摘要

A needleless electrospinning setup named 'Needleless Twisted Wire Electrospinning' was developed. The polymer solution is electrospun from the surface of a twisted wire set to a high voltage and collected on a cylindrical collector around the wire. Multiple Taylor cones are simultaneously self-formed on the downward flowing solution. The system is robust and simple with no moving parts aside from the syringe pump used to transport the solution to the top of the wire. The structure and process parameters of the setup and the results on the preparation of polyvinyl pyrrolidone (PVP), hydroxyapatite (HA) and bioglass fibers with the setup are presented. PVP fiber sheets with areas of 40 x 120 cm(2) and masses up to 1.15 g were prepared. High production rates of 5.23 g h(-1) and 1.40 g h(-1) were achieved for PVP and HA respectively. The major limiting factor of the setup is drying of the polymer solution on the wire during the electrospinning process which will eventually force to interrupt the process for cleaning of the wire. Possible solutions to this problem and other ways to develop the setup are discussed. The presented system provides a simple way to increase the production rate and area of fiber sheet as compared with the conventional needle electrospinning.
机译：开发了一种无针静电纺丝装置，名为“无捻双绞线静电纺丝”。聚合物溶液从设置为高电压的双绞线表面进行电纺丝，然后收集在绕线的圆柱形收集器上。多个泰勒圆锥同时在向下流动的溶液上自行形成。该系统既坚固又简单，除了用于将溶液输送到金属丝顶部的注射泵外，没有活动部件。介绍了该装置的结构和工艺参数，以及用该装置制备聚乙烯吡咯烷酮（PVP），羟基磷灰石（HA）和生物玻璃纤维的结果。准备了面积为40 x 120 cm（2），质量最大为1.15 g的PVP纤维板。 PVP和HA分别达到5.23 g h（-1）和1.40 g h（-1）的高生产率。设置的主要限制因素是在静电纺丝过程中电线上聚合物溶液的干燥，这最终将迫使中断电线的清洁过程。讨论了此问题的可能解决方案以及开发设置的其他方法。与常规的针电纺丝相比，本发明的系统提供了增加纤维片的生产率和面积的简单方法。

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