Journal article
Effect of electrospinning processing variables on polyacrylonitrile nanoyarns
Journal of applied polymer science, v 135(25), pp 46404-n/a
05 Jul 2018
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
With recent developments in the field of smart textiles, researchers have been working toward fabricating architectures of nanofibers, known as nanoyarns, which mimic the geometry of a conventional yarn. In doing so, one can leverage the unique properties of nanoscale fibers, including high surface-to-volume ratio and tunable porosity, for the development of smart garments. In the last 5 years, researchers have produced nanoyarns from a limited number of polymers, including polyacrylonitrile (PAN) and poly(vinylidene fluoride) and its co-polymers. However, to our knowledge, there has been little research on the solution properties and electrospinning parameters needed to fabricate these higher-order architectures from nonwoven mats. In this work, a modified electrospinning setup, enclosed in a humidity-controlled chamber, was developed to fabricate nanoyarns for integration into knitted textiles. We fabricated nanofibers and nanoyarns from PAN/DMF solutions and conducted a systematic study to analyze the effect of solution conductivity, viscosity, and electrospinning parameters (applied voltage, collector distance, and humidity) on fiber and yarn fabrication and morphology. Polymer concentration had a significant effect on fibrous cone and yarn fabrication. Low polymer concentrations resulted in poor cone formation, whereas high concentration resulted in dense cones that were difficult to draw into nanoyarns. Overall, the matrix of electrospinning parameters that resulted in the formation of homogenous nanofiber mats was larger than that of nanoyarn formation. Nanoyarn formation required higher polymer concentration and/or applied voltage than nonwoven mat formation. The influence of these parameters on nanoyarn formation and fiber diameter can be used to expand the library of spinnable nanoyarns and optimize their properties for specific applications. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46404.
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Details
- Title
- Effect of electrospinning processing variables on polyacrylonitrile nanoyarns
- Creators
- Ariana S. Levitt - Shima Seiki Haute Tech Lab, Drexel University, 3141 Chestnut StreetPhiladelphia Pennsylvania19104Richard Vallett - Drexel UniversityGenevieve Dion - Drexel UniversityCaroline L. Schauer - Drexel University
- Publication Details
- Journal of applied polymer science, v 135(25), pp 46404-n/a
- Publisher
- Wiley
- Number of pages
- 9
- Grant note
- U01EB023035 / National Institute of Biomedical Imaging and Bioengineering of the National Institutes of Health; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Biomedical Imaging & Bioengineering (NIBIB) 1537720 / Div Of Civil, Mechanical, & Manufact Inn; National Science Foundation (NSF); NSF - Directorate for Engineering (ENG) DGE-1646737 / National Science Foundation Graduate Research Fellowship; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Pennsylvania Fabric Discovery Center; Fashion Design; Materials Science and Engineering
- Web of Science ID
- WOS:000428701200037
- Scopus ID
- 2-s2.0-85044600096
- Other Identifier
- 991019167781904721
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- Web of Science research areas
- Polymer Science