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Poling-free spinning process of manufacturing piezoelectric yarns for textile applications

Title
Poling-free spinning process of manufacturing piezoelectric yarns for textile applications
Author
배지현
Keywords
Piezoelectric yarns; Twist-spinning; PVDF nanofibers; Crystalline
Issue Date
2019-10
Publisher
ELSEVIER SCI LTD
Citation
MATERIALS & DESIGN, v. 179, no. UNSP 107889
Abstract
This report describes a newtwist-spinning process for the manufacture of piezoelectric yarn without the need for additional poling processes. Poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) nanofibers were first electrospun and organized into a web structure. Using rotational and translational motors, the nanofibers of the web were pulled and stretched and, finally, twisted into piezoelectric yarns. The crystallinity, beta phase ratio, and mechanical and piezoelectric properties of these twist-spun piezoelectric yarns were characterized to assess the effects of the twist-spinning operation on their microstructure and performance. Twist-spun piezoelectric yarns that had undergone high degrees of stretching exhibited enhancements in both crystallinity and beta phase ratio by 83% and 12%, respectively. In contrast, high stretching reduced the tensile strength and modulus of the yarns due to small surface angles. The twist-spun piezoelectric yarn with the highest beta phase ratio and lowest modulus attained in this study yielded a piezoelectric potential and piezoelectric voltage constant of 500 mV and 0.412 mVm/N, respectively. (c) 2019 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
URI
https://www.sciencedirect.com/science/article/pii/S0264127519303272?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/111197
ISSN
0264-1275; 1873-4197
DOI
10.1016/j.matdes.2019.107889
Appears in Collections:
COLLEGE OF HUMAN ECOLOGY[S](생활과학대학) > CLOTHING & TEXTILES(의류학과) > Articles
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