Fabrication of Necklace-like Structures via Electrospinning
Fabrication of Necklace-like Structures via Electrospinning
复制标题
通过静电纺丝制造项链状结构
DOI：
10.1021/la902313t
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发表时间：
2010-01-19
期刊：
影响因子：
3.9
通讯作者：
Jiang, Xingyu
中科院分区：
文献类型：
--
作者：
Jin, Yu;Yang, Dayong;Jiang, Xingyu
本文报道了一种利用静电纺丝技术从零维材料一步法制备项链状结构的方法。聚乙烯醇（PVA）被用作聚合物基质，用于实现二氧化硅颗粒的项链状阵列。系统地研究了SiO2粒子的粒径、PVA/SiO2的质量比、电压以及PVA/SiO2/H2O的相对含量对静电纺丝纤维形貌的影响。直径为143 nm的SiO2颗粒倾向于在纤维中聚集成束，而265和910 nm的SiO2颗粒倾向于沿纤维一个接一个地沿着，类似于项链。PVA/SiO2/H2O溶液中水的含量对纤维的直径有重要影响，从而决定了纤维的形态。太稀的溶液会产生黑莓样的结构;太浓的溶液太硬，无法从针孔喷出;当成分被精心剪裁时，我们得到了项链样的结构。我们相信，这些结果呼吁作为参考，以产生其他复杂的结构，涉及聚合物和粒子通过静电纺丝，这些结构将是潜在的有用的光电器件，药物释放，和光学元件。
We report a One-step method to fabricate necklace-like Structures from zero-dimensional materials via electrospinning. PVA was used as polymer matrix for accomplishing necklace-like arrays of silica particles. We systemically investigated how the diameter of SiO2 particles, the weight ratio of PVA to SiO2, the voltage, and the relative content of PVA/SiO2/H2O influenced the morphology of electrospun fibers. SiO2 particles with diameter of 143 run tended to aggregate into bunches in the fibers, while 265 and 910 nm SiO2 particles tended to align along the Fibers one by one, resembling necklaces. The content of water in the PVA/SiO2/H2O solution showed critical influence on the diameter of fibers and consequently determined the morphology. Too thin solutions gave birth to blackberry-like structure; too condensed solution was too hard to eject from the orifice of the needle; when the ingredient was elaborately tailored, we obtained necklace-like structures. We believe that these results call serve as references to generating other complex structures involving polymers and particles via electrospinning and that these structures will be potentially useful in photoelectric devices, drug release, and optical components.