Anti-icing Property of Ion Liquid/PVDF Nanofibers

doi:10.7503/cjcu20160874

Abstract

Abstract:

An electrospinning method to prepare ionic liquid(IL) incorporated poly(vinylidene ?uoride)(PVDF) nanofibers was adopted in this paper. X-ray photoelectron spectrometry(XPS), Fourier transform infrared spectrophotometer(FTIR) and X-ray diffraction(XRD) results showed that the IL which appeared on the surface of the nanofibers was miscible with PVDF, and also led to a higher content of β-phase crystal in PVDF. The IL content in the nanofibers exerted a significant impact on the surface morphology and wettability of the composite nanofibers, and thus the freezing time, crystallization temperatures of water droplets on these surfaces as well as ice adhesion strength. The results showed that the PVDF nanofibers with 10% IL presented both the highest water repellency and the best anti-icing property.

Key words: Poly(vinylidene ?uoride), Ionic liquid, Nanoﬁber, Hydrophobic, Anti-icing

CLC Number:

O631

TrendMD:

ZHANG Ting, WANG Chengchen, GUO Xiaoying, ZHANG Liang. Anti-icing Property of Ion Liquid/PVDF Nanofibers[J]. Chem. J. Chinese Universities, 2017, 38(6): 959.

Figures/Tables 6

Fig.1 XPS(A), XRD(B) and FTIR(C) spectra of the pure PVDF(a) and [BMIM][PF6]/PVDF composite nanoﬁbers with different IL contents Mass fraction of IL(%): a. 0; b. 5; c. 10; d. 15; e. 20.

Fig.2 SEM images of electrospun PVDF nanofibers(A) and [BMIM][PF6]/PVDF composite nanofibers with IL mass fraction of 5%(B), 10%(C), 15%(D) and 20%(E), respectively

Fig.3 Contact angles of the electrospun PVDF and [BMIM][PF6]/PVDF composite nanoﬁbers

Fig.4 Photographs of individual water droplets on electrospun PVDF nanofibers(A) and [BMIM][PF6]/PVDF composite nanofibers with IL mass fraction of 5%(B), 10%(C), 15%(D) and 20%(E), respectively

Fig.5 DSC curves of water droplets on electrospun uncoated(A), PVDF nanofibers(B) and [BMIM][PF6]/PVDF composite nanofibers with IL mass fraction of 5%(C), 10%(D), 15%(E) and 20%(F), respectively

Fig.6 Ice adhension strength versus IL content of the nanoﬁbers

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