期刊
POLYMER
卷 103, 期 -, 页码 243-250出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2016.09.061
关键词
Post drawing; Nanofiber; Electrospinning; Polymer; Polycaprolactone
资金
- National Science Foundation [NSF1561966]
- Rowan University Seed Fund
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1561966] Funding Source: National Science Foundation
The study reports a nanomanufacturing method that facilitates post-drawing of electrospun polymer nanofibers. Post-drawing is critical in conventional microfiber processing to enhance mechanical strength, but has been difficult to implement with nanofibers. Here, a parallel automated track collector was designed to permit continuous processing of thousands of individual nanofibers per minute under highly controllable drawing conditions. Post-drawing systematically induced macromolecular alignment and altered the chemical bond composition of polycaprolactone nanofibers with increasing draw ratio. The strength and stiffness of fibers with a draw ratio of 4 were enhanced by 7 and 15 times respectively and their mechanical properties exceeded previously reported values for conventional and nanoscale polycaprolactone structures. (C) 2016 Elsevier Ltd. All rights reserved.
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