Cadafalch Gazquez Gerard, Smulders Vera, Veldhuis Sjoerd A, Wieringa Paul, Moroni Lorenzo, Boukamp Bernard A, Ten Elshof Johan E
MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
Department of Complex Tissue Regeneration, MERLN Institute for Technology Inspired Regenerative Medicine, University of Maastricht, 6200 MD, Maastricht, The Netherlands.
Nanomaterials (Basel). 2017 Jan 13;7(1):16. doi: 10.3390/nano7010016.
The fabrication process of ceramic yttria-stabilized zirconia (YSZ) and nickel oxide nanofibers by electrospinning is reported. The preparation of hollow YSZ nanofibers and aligned nanofiber arrays is also demonstrated. The influence of the process parameters of the electrospinning process, the physicochemical properties of the spinning solutions, and the thermal treatment procedure on spinnability and final microstructure of the ceramic fibers was determined. The fiber diameter can be varied from hundreds of nanometers to more than a micrometer by controlling the solution properties of the electrospinning process, while the grain size and surface roughness of the resulting fibers are mainly controlled via the final thermal annealing process. Although most observed phenomena are in qualitative agreement with previous studies on the electrospinning of polymeric nanofibers, one of the main differences is the high ionic strength of ceramic precursor solutions, which may hamper the spinnability. A strategy to control the effective ionic strength of precursor solutions is also presented.
报道了通过静电纺丝制备陶瓷氧化钇稳定氧化锆（YSZ）和氧化镍纳米纤维的工艺过程。还展示了中空YSZ纳米纤维和排列的纳米纤维阵列的制备。确定了静电纺丝工艺参数、纺丝溶液的物理化学性质以及热处理程序对陶瓷纤维可纺性和最终微观结构的影响。通过控制静电纺丝工艺的溶液性质，纤维直径可从数百纳米变化到超过一微米，而所得纤维的晶粒尺寸和表面粗糙度主要通过最终的热退火工艺来控制。尽管观察到的大多数现象与先前关于聚合物纳米纤维静电纺丝的研究在定性上一致，但主要差异之一是陶瓷前驱体溶液的高离子强度，这可能会妨碍可纺性。还提出了一种控制前驱体溶液有效离子强度的策略。
