NDLI: Piezoelectric characteristics of electrospun PVDF as a function of phase-separation temperature and metal salt content

Content Provider	Springer Nature Link
Author	Prasad, Gajula Sathiyanathan, Ponnan Prabu, Arun Anand Kim, Kap Jin
Copyright Year	2017
Abstract	In this paper, the crystallinity changes in polyvinylidene fluoride (PVDF) as function of varying phase-separation temperatures (0 to 90 °C) and chloride salts (BaCl$_{2}$, CaCl$_{2}$, C°Cl$_{2}$, NaCl, SnCl$_{2}$, N$_{2}$H6Cl$_{2}$) were investigated. FTIR quantitative analysis showed higher β-crystalline and lower α-crystalline content for 70 °C phase-separated PVDF and 70 °C phase-separated PVDF-CaCl$_{2}$ (15 wt%) samples. XRD and DSC studies also confirmed the influence of 70 °C phase-separation temperature and CaCl$_{2}$ salt in improving the β-crystallinity in PVDF compared to the neat PVDF sample. Since higher β-crystalline content is favoured for use in piezoelectric applications, these two sample preparation conditions were optimized for use in piezoelectric studies. Electrospun nanowebs of the selected samples were measured for their piezoelectric output signals under applied pressure of 1 kgf and released periodically at 0.5 Hz. From the peak-to-peak output voltage, 70 °C phase-separated PVDF-CaCl$_{2}$ sample exhibited significantly higher output voltage (+0.89 V) compared to neat PVDF (+0.48 V) and 70 °C phase-separated PVDF (+0.53 V) samples. These results conclude that the combinative effect of phase-separation temperature and metal salt addition plays a vital role in improving the piezoelectric characteristics of PVDF, which signifies the importance of this study.
Starting Page	981
Ending Page	988
Page Count	8
File Format	PDF
ISSN	15985032
Journal	Macromolecular Research
Volume Number	25
Issue Number	10
e-ISSN	20927673
Language	English
Publisher	The Polymer Society of Korea
Publisher Date	2017-09-02
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	polyvinylidene fluoride metal salts electrospinning crystallinity piezoelectricity Polymer Sciences Soft and Granular Matter, Complex Fluids and Microfluidics Physical Chemistry Characterization and Evaluation of Materials Nanochemistry Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Materials Chemistry Chemical Engineering Polymers and Plastics

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