Processing and characterization of oriented electrospun poly(vinylidene fluoride) mats

作者：Gasparini Thiago Manha; Suman Bretas Rosario Elida; da Silva Aline Bruna; Gregorio Rinaldo Jr^*

来源：Journal of Polymer Science Part B: Polymer Physics , 2012, 50(18): 1304-1311.

DOI：10.1002/polb.23123

• electrospinning
• ferroelectricity
• fibers
• FTIR
• hysteresis loop
• orientation
• oriented nanofibers
• polymorphism
• polyvinylidene fluoride
• PVDF
• sensors

Mats of highly oriented poly(vinylidene fluoride) nanofibers were electrospun by means of a conventional electrospinning equipment; the orientation, however, was obtained using a disk collector rotating at a speed of 4000 rpm and a device that reduced the influence of air displacement during nanofiber orientation. Thermal transitions of the mats were determined by differential scanning calorimetry, the predominant crystalline phase by Fourier transform infrared spectroscopy and wide-angle X-ray scattering and the nanofiber orientation and morphology by scanning electron microscopy. Relative permittivity, loss index, stable remnant polarization, and coercive field of the mats were also determined and compared with those obtained for a mat electrospun at 2000 rpm and an oriented commercial film.

• 出版日期2012-9-15