Chen Jiun-Tai, Chen Wan-Ling, Fan Ping-Wen
Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30050.
ACS Macro Lett. 2012 Jan 17;1(1):41-46. doi: 10.1021/mz200008e. Epub 2011 Nov 9.
We demonstrate a simple route to fabricate hierarchical structures by combining the electrospinning technique and the wetting of porous templates. Poly(methyl methacrylate) (PMMA) fibers are first prepared by electrospinning and are collected on a glass substrate. The PMMA fibers are then brought into contact with an anodic aluminum oxide template. Upon thermal annealing above the glass transition temperature of PMMA, wetting of the polymer chains into the nanopores occurs. After the removal of the AAO template, ordered arrays of nanorods on polymer fibers are obtained. This approach is also applied to polystyrene (PS), and similar structures are obtained. This work provides a promising approach to fabricate hierarchical polymer structures with sizes that can be controlled over the nanoscopic and microscopic length scales.
我们展示了一种通过结合静电纺丝技术和多孔模板的浸润来制造分级结构的简单方法。首先通过静电纺丝制备聚甲基丙烯酸甲酯（PMMA）纤维，并将其收集在玻璃基板上。然后使PMMA纤维与阳极氧化铝模板接触。在高于PMMA玻璃化转变温度的热退火过程中，聚合物链会浸润到纳米孔中。去除阳极氧化铝模板后，可在聚合物纤维上获得有序的纳米棒阵列。该方法也适用于聚苯乙烯（PS），并获得了类似的结构。这项工作为制造尺寸可在纳米和微观长度尺度上控制的分级聚合物结构提供了一种有前景的方法。
