کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5461852 | 1398797 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Morphology and dielectric investigations of hydrated-halt P(VDF-HFP) membranes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Morphology and dielectric investigations of hydrated-halt P(VDF-HFP) membranes Morphology and dielectric investigations of hydrated-halt P(VDF-HFP) membranes](/preview/png/5461852.png)
چکیده انگلیسی
This study focuses on a preparation and characterization of hydrated-salt membranes based on the blend of poly(vinylidene fluoride-hexafluoropropylene) [P(VDF-HFP)] and magnesium chloride (MgCl2â
6H2O). The membranes with MgCl2â
6H2O concentration of 0-4 wt% were prepared by solution casting technique. An elemental composition of the prepared samples was analyzed using energy dispersive x-ray spectroscopy (EDS). The surface morphology and pore size of these membranes were investigated by scanning electron microscopy (SEM). Surface roughness of the as-received membranes was evaluated by atomic force microscopy (AFM). The degree of the crystallinity and phase structures of the P(VDF-HFP) membranes were analyzed by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The dielectric and the electrical conductivity of all samples were measured in a range of 1-105 Hz. The SEM and AFM images revealed that the formation of the microporous P(VDF-HFP) membranes was controllable by the adjustment of MgCl2â
6H2O content. The surface roughness, pore size and ionic conductivity of the as-received membranes increased with MgCl2â
6H2O concentration. The dielectric constant reached its maximum value of about 25 at 3.5 wt% of MgCl2â
6H2O. The XRD results showed that the mixture of MgCl2â
6H2O salt led to a decrease in the degree of crystallinity. However, the salt-loaded P(VDF-HFP) enhanced the fraction of an electroactive β-phase up to 84% and this was confirmed by the FTIR results. This pointed out that the hydrated-salt P(VDF-HFP) membranes had a potential in new applications such as energy harvesting area.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Today: Proceedings - Volume 4, Issue 5, Part 2, 2017, Pages 6648-6657
Journal: Materials Today: Proceedings - Volume 4, Issue 5, Part 2, 2017, Pages 6648-6657
نویسندگان
J. Yuennan, P. Sukwisute, N. Muensit,