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Strip twisted electrospun nanofiber yarns: Structural effects on tensile properties

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journal contribution
posted on 2012-01-01, 00:00 authored by Yaqiong Zhou, Jian Fang, Xungai Wang, Tong Lin
Nanofiber yarns with controlled twist levels were prepared by twisting a narrow fibrous strip cut directly from electrospun nanofiber mats. The effects of fiber morphology, diameter and orientation, as well as the yarn twist level on the yarn tensile properties were examined. For the yarns made from randomly oriented fine uniform nanofibers (e.g., diameter 359 nm) and beaded nanofibers, the tensile strength increased with increasing the yarn twist level. Higher fiber diameter (e.g., 634 nm) led to the tensile strength having an initial increase and then decrease trend. The modulus increased with the twist level for all the yarns studied. However, the elongation at break increased initially with the twist level and subsequently decreased. The orientation of aligned fibers within the fiber strip greatly influenced the yarn tensile properties. When the fibers were oriented along the fiber length direction, both tensile strength and modulus were the largest.

History

Journal

Journal of Materials Research

Volume

27

Issue

3

Pagination

537 - 544

Publisher

Cambridge University Press

Location

New York, United States

ISSN

0884-2914

eISSN

2044-5326

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2012, Cambridge University Press