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Study of $\beta$-phase development in spin-coated PVDF thick films
BHOOPESH MAHALE DHANANJAY BODAS S A GANGAL
Volume 40 Issue 3 June 2017 pp 569-575
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https://www.ias.ac.in/article/fulltext/boms/040/03/0569-0575 -
Keywords
Poly(vinylidene fluoride) ;$\beta$-phase ;spin coating ;crystallization temperature. -
Abstract
A study was conducted to ascertain the effect of variation in spin speed and baking temperature on $\beta$-phase content in the spin-coated poly(vinylidene fluoride) (PVDF) thick films ($\sim$4−25 $\mu$m). Development of $\beta$-phase is dependent on film stretching and crystallization temperature. Therefore, to study the development of $\beta$-phase in films, stretching is achieved by spinning and crystallization temperature is adjusted by means of baking. PVDF films are characterized using Fourier transform infrared spectroscopy, X-ray diffraction, differential scanning calorimetry, and scanning electronmicroscopy. It is observed that crystallization temperature lower than 60$^{\circ}$C and increase in spin speed increases the $\beta$-phasecontent in PVDF films. Crystallization temperature above 60$^{\circ}$C reduces $\beta$-phase content and increases α-phase content. It was also observed that viscosity of the PVDF solution affects the β-phase development in films at a particular spin speed.
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Author Affiliations
BHOOPESH MAHALE1 DHANANJAY BODAS2 S A GANGAL1
- Department of Electronic Science, Savitribai Phule Pune University, Pune 411 007, India
- Centre for Nanobioscience, Agharkar Research Institute, Pune 411 004, India
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Dates
- Published
- 15 June 2017
- Manuscript received
- 14 February 2016
- Accepted
- 25 July 2016
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