a.Department of Materials, School of Natural Sciences, The University of Manchester, Manchester M13 9PL, U.K.
b.School of Fashion, Zhongyuan University of Technology, Zhengzhou 450007, China
henry.yili@manchester.ac.uk
收稿:2020-01-02,
修回:2020-3-13,
录用:2020-3-17,
网络首发:2020-06-18,
纸质出版:2020-08-14
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Jin, L.; Zheng, Y.; Liu, Z. K.; Li, J. S.; Yi, Y. P. Q.; Fan, Y. Y.; Xu, L. L.; Li, Y. Enhancement of , β,-phase crystal content of poly(vinylidene fluoride) nanofiber web by graphene and electrospinning parameters. Chinese J. Polym. Sci. 2020, 38, 1239–1247
Lu Jin, Yan Zheng, Ze-Kun Liu, et al. Enhancement of
Jin, L.; Zheng, Y.; Liu, Z. K.; Li, J. S.; Yi, Y. P. Q.; Fan, Y. Y.; Xu, L. L.; Li, Y. Enhancement of , β,-phase crystal content of poly(vinylidene fluoride) nanofiber web by graphene and electrospinning parameters. Chinese J. Polym. Sci. 2020, 38, 1239–1247 DOI: 10.1007/s10118-020-2428-4.
Lu Jin, Yan Zheng, Ze-Kun Liu, et al. Enhancement of
Electrospun poly(vinylidene fluoride) (PVDF) nanofiber web has been widely utilized as a functional material in various flexible sensors and generators due to its high piezoelectricity
ease processability
and low cost. Among all the crystalline phases of PVDF
β
-phase is a key property for PVDF nanofiber web
because the content of
β
-phase is directly proportional to piezoelectric performance of PVDF nanofiber web. Herein
the impact of graphene content (GC)
tip-to-collector distance (TCD)
and rotational speed of collector (RSC)
as well as their interactions on the
β
-phase formation of PVDF nanofiber web is systematically investigated
via
design of experimental method. The fraction of each crystalline phase of PVDF nanofiber web is calculated by FTIR spectra
and the crystallinity is determined by XRD patterns. The influences of GC
TCD
and RSC on both
β
-phase fraction and crystallinity of PVDF nanofiber are analyzed using Minitab program. The results show that GC
TCD
and RSC all have significant effect on the
β
-phase content of PVDF nanofiber web
and GC is the most significant one. In addition
an optimal electrospinning condition (GC = 1 wt%
TCD = 4 cm
and RSC = 2000 r·min
–1
) to fabricate high
β
-phase crystallinity of PVDF nanofiber web is drawn
under which the crystallinity can reach 41.7%. The contributions in this study could provide guidance for future research on fabricating high performance PVDF nanofiber web based sensors or generators.
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