International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland.
International Centre of Electron Microscopy for Materials Science, Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland.
Adv Colloid Interface Sci. 2020 Dec;286:102315. doi: 10.1016/j.cis.2020.102315. Epub 2020 Nov 6.
Electrospinning is one of the most important methods used for the production of nanostructured materials. Electrospun nanofibers are used in a wide spectrum of applications such as drug delivery systems, filtration, fog harvesting, tissue engineering, smart textiles, flexible electronics, and more. Control of the manufacturing process is essential for further technology developments. In electrospinning, relative humidity is a crucial parameter that influences nearly all the properties of the collected fibers, such as morphology, mechanical properties, liquid retention, wetting properties, phase composition, chain conformation, and surface potential. Relative humidity is a determining component of a reliable process as it governs charge dissipation and solvent evaporation. This review summarizes the electrospinning process and its applications, phase separation processes, and impact of relative humidity on the properties of polymer fibers. We investigated relative humidity effects on both hydrophilic and hydrophobic polymers using over 20 polymers and hundreds of solvent systems. Most importantly, we underlined the indisputable importance of relative humidity in process repeatability and demonstrated its impact on almost all aspects of fiber production from a solution droplet to an electrospun network.
静电纺丝是用于制造纳米结构材料的最重要方法之一。静电纺纳米纤维在药物输送系统、过滤、雾收集、组织工程、智能纺织品、柔性电子等广泛的应用中得到了应用。为了进一步发展技术，对制造过程的控制是必不可少的。在静电纺丝中，相对湿度是一个关键参数，几乎影响到所收集纤维的所有性质，如形态、机械性能、液体保持、润湿性、相组成、链构象和表面电势。相对湿度是可靠工艺的决定因素，因为它控制着电荷耗散和溶剂蒸发。本综述总结了静电纺丝工艺及其应用、相分离过程以及相对湿度对聚合物纤维性能的影响。我们使用了 20 多种聚合物和数百种溶剂体系，研究了相对湿度对亲水性和疏水性聚合物的影响。最重要的是，我们强调了相对湿度在工艺重复性方面的不可争议的重要性，并证明了它对从溶液液滴到静电纺丝网络的纤维生产的几乎所有方面的影响。
