Continuous Self-crimped Micro-nanofiber via One-step Electrospinning
Continuous Self-crimped Micro-nanofiber via One-step Electrospinning
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DOI：
10.1016/j.compositesa.2022.106959
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发表时间：
2022-04
期刊：
影响因子：
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通讯作者：
Chengdong Xiong;Liming Wang;J. Yu;X. Qin;Rongwu Wang;Jianyong Yu
中科院分区：
文献类型：
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作者：
Chengdong Xiong;Liming Wang;J. Yu;X. Qin;Rongwu Wang;Jianyong Yu
具有卷曲结构的微纳米纤维在先进功能应用中具有广阔的前景，但其制备方法仍面临加工复杂、结构不可控和形成机制难以捉摸的挑战。本文通过一步静电纺丝开发了一种新型连续自卷曲微纳米纤维形成方法。通过形态观察、晶体表征、电性能测量、数学模拟和力学分析表明，沉积在羊毛基材上的聚苯乙烯（PS）静电纺丝纤维卷曲的触发因素是它们之间的直径尺寸、介电常数和电导率的综合差异以及基材纤维之间的间隙宽度。另外，压接的程度可以通过组合位置和形状来调整。建立多重力的理论模型来解释卷曲的形成机制，并通过实验结果进一步验证。总之，这项工作提供了一种激发各种特定纤维卷曲的简便方法，这可以赋予它们在广泛领域的功能应用潜力。
Micro-nanofiber with crimped structure can be promising in advanced functional application, but its preparation method is still challenged by complex processing, uncontrollable structure and elusive formation mechanism. Herein, a novel continuous self-crimped micro-nanofiber forming method is developed by one-step electrospinning. Through morphological observation, crystal characterization, electrical-performance measurement, mathematical simulation and mechanical analysis, it is shown that the trigger of crimp of polystyrene (PS) electrospinning fiber deposited on wool substrate is the comprehensive differences in diameter size, dielectric constant and electrical conductivity between them and the gap width between substrate fibers. Additionally, the degree of crimp can be adjusted by combining position and form. The theoretical model of multiple forces is established to explain the forming mechanism of crimp, which is further validated by experimental results. Conclusively, this work offers a facile means to inspire crimping of various specific fibers, which can endow them with functional application potentials in wide field.