Journal
POLYMERS
Volume 7, Issue 8, Pages 1444-1463Publisher
MDPI
DOI: 10.3390/polym7081444
Keywords
nanofiber; electrospun film; PVDF; graphene nanocomposite; hydrophobicity
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Funding
- Advanced Systems Research Company
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A new strategy to induce superhydrophobicity via introducing hierarchical structure into the polyvinylidene fluoride (PVDF) film was explored in this study. For this purpose nanofibrous composite films were prepared by electrospinning of PVDF and PVDF/graphene blend solution as the main precursors to produce a net-like structure. Various spectroscopy and microscopy methods in combination with crystallographic and wettability tests were used to evaluate the characteristics of the synthesized films. Mechanical properties have been studied using a universal stress-strain test. The results show that the properties of the PVDF nanofibrous film are improved by compositing with graphene. The incorporation of graphene flakes into the fibrous polymer matrix changes the morphology, enhances the surface roughness, and improves the hydrophobicity by inducing a morphological hierarchy. Superhydrophobicity with the water contact angle of about 160 degrees can be achieved for the PVDF/graphene electrospun nanocomposite film in comparison to PVDF pristine film.
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