Polymer melt differential electrospinning from a linear slot spinneret

• Published in: Journal of applied polymer science Vol. 137; no. 31
• Main Authors: Chen, Mingjun, Zhang, Youchen, Chen, Xiaoqing, Yang, Weimin, Li, Haoyi, Yousefzadeh, Maryam, Ramakrishna, Seeram
• Format: Journal Article
• Language: English
• Published: Hoboken, USA John Wiley & Sons, Inc 15.08.2020; Wiley Subscription Services, Inc
• Subjects: Electric fields; Electrospinning; fibers; Materials science; Polymer films; Polymer melts; Polymers; thermoplastics; Thickness
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.48922

ABSTRACT Preparation of melt electrospun fibers with high efficiency and high productivity remains a big challenge. A polymer melt differential electrospinning system with linear slot spinneret (LSSP) was proposed in this work. Under a high electric field, multiple jets distributed at the tip of LSSP were self‐organized from the polymer melt film with controlled thickness. The spinning parameters were investigated, and the electric filed between spinneret and collector was analyzed. The results showed that the interjet distance decreased significantly with the decrease of the thickness of polymer melt film and the Tayler cone size. The smallest average interjet distance of 1.9 mm with deviation of 0.5 mm was obtained under the condition of applied voltage of 45 kV, collecting distance of 9 cm, temperature of 250 °C, and slot thickness of 0.2 mm. The high output of 75.6 g/h was achieved and could be increased just by increasing the slot width. It was demonstrated that the proposed technology was a promising way to fabricate melt electrospun fibers with high efficiency. © 2020 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48922. Multiple melt jets that generated from self organization of polymer melt film