The Formation Mechanism of Electrospun Beaded Fibers: Experiment and Simulation Study

IF 0.6 4区 工程技术 Q4 MATERIALS SCIENCE, TEXTILES AATCC Journal of Research Pub Date : 2022-11-12 DOI:10.1177/24723444221132049
Cheng Ge, Yuansheng Zheng, Kai Liu, B. Xin, Masha Li, MD. All Amin Newton
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引用次数: 1

Abstract

This research examined the influence of solution concentration on Taylor cone morphology, jet behavior, fiber surface morphology, and the impact of spinning voltage on the microbead shape of the beaded fiber. The straight jet length, envelope cone, whipping frequency of the electrospun jet, and Taylor cone morphology were studied using the images captured by a high-speed photography camera. According to the findings, higher solution concentrations result in longer straight jet lengths, smaller envelope cones, and lower whipping frequencies. Scanning electron microscopy was used to ascertain the diameter and surface morphology of polystyrene fibers, revealing that fibers spun with higher solution concentrations had larger diameters. In contrast, low concentration solutions receive more electric field forces due to higher conductivity. The jet tends to break, and fibers with the beads-on-a-string morphology form. Furthermore, the influence of voltage on microbead shape has been further examined using the simulation software COMSOL. As the spinning voltage increases, the jet’s stretching impact is more prominent, and the bead shape gradually changes from nearly circular to spindle-shaped.
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静电纺珠状纤维的形成机理:实验与仿真研究
本研究考察了溶液浓度对泰勒锥形态、射流行为、纤维表面形态的影响,以及纺丝电压对珠状纤维微珠形状的影响。利用高速摄影相机拍摄的图像,研究了直射流的长度、包络锥、电纺射流的摆动频率和泰勒锥的形态。根据研究结果,较高的溶液浓度会导致较长的直喷长度、较小的包络锥和较低的搅拌频率。扫描电子显微镜用于确定聚苯乙烯纤维的直径和表面形态,表明用较高溶液浓度纺丝的纤维具有较大的直径。相反,低浓度溶液由于更高的电导率而受到更多的电场力。射流倾向于破裂,形成具有珠串形态的纤维。此外,使用模拟软件COMSOL进一步研究了电压对微珠形状的影响。随着纺丝电压的增加,射流的拉伸冲击更加突出,珠粒形状逐渐从近似圆形变为纺锤形。
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来源期刊
AATCC Journal of Research
AATCC Journal of Research MATERIALS SCIENCE, TEXTILES-
CiteScore
1.30
自引率
0.00%
发文量
34
期刊介绍: AATCC Journal of Research. This textile research journal has a broad scope: from advanced materials, fibers, and textile and polymer chemistry, to color science, apparel design, and sustainability. Now indexed by Science Citation Index Extended (SCIE) and discoverable in the Clarivate Analytics Web of Science Core Collection! The Journal’s impact factor is available in Journal Citation Reports.
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