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Nanomaterials 2018, 8(10), 746;

Preliminary Study of Ultrasonic Welding as a Joining Process for Electrospun Nanofiber Mats

Faculty of Textile and Clothing Technology, Niederrhein University of Applied Sciences, 41065 Mönchengladbach, Germany
Faculty of Engineering and Mathematics, Bielefeld University of Applied Sciences, ITES, 33619 Bielefeld, Germany
Departamento de Ingeniería Química, Campus de Teatinos s/n, Universidad de Málaga, Andalucía Tech, 29010 Málaga, Spain
Author to whom correspondence should be addressed.
Received: 30 August 2018 / Revised: 13 September 2018 / Accepted: 18 September 2018 / Published: 20 September 2018
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Electrospinning can be used to create nanofiber mats for diverse applications, from wound dressings and tissue engineering to filters for medical and biotechnological applications. In most of these applications, it is necessary to fix the nanofiber mat on a macroscopic textile fabric, on another nanofiber mat or within a frame to keep it at the desired position. Due to their extremely low thickness and areal mass, however, nanofiber mats are easily destroyed by sewing, and in several situations glued bonds are too thick and not flexible enough. Here we report on ultrasonic welding of polyacrylonitrile nanofiber mats, suggesting this method as a joining process without destruction of the mat morphology for thermoplastic nanofiber mats. A variety of welding patterns results in different adhesion forces between both joined nanofiber mats and different failure mechanisms, with some welding patterns enabling bonding stronger than the mats themselves. Our findings show that ultrasonic welding is a possible joining method for polyacrylonitrile nanofiber mats. View Full-Text
Keywords: electrospinning; nanofiber mat; bonding; joining; ultrasonic welding electrospinning; nanofiber mat; bonding; joining; ultrasonic welding

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Wirth, E.; Sabantina, L.; Weber, M.O.; Finsterbusch, K.; Ehrmann, A. Preliminary Study of Ultrasonic Welding as a Joining Process for Electrospun Nanofiber Mats. Nanomaterials 2018, 8, 746.

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