Publication: PVDF based nanocomposites produced by solution blow spinning, structure and morphology induced by the presence of MWCNT and their consequences on some properties
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Publication date
2019-08-01
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Tutors
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Springer
Abstract
Nanocomposites based on poly(vinylidene fluoride), PVDF, filled with multiwalled carbon nanotubes, MWCNT, were prepared
by solution blow spinning, SBS. PVDF was modified with MWCNT with the aim of changing final properties inducing structural
and morphological variations in the polymer by the simple presence of conductive particles. Different compositions were
considered (0%, 1%, 2%, 3%, and 5% by weight of MWCNT) to understand the influence of the presence of MWCNT on the
polymer structure, morphology, and consequently other properties. Morphology was inspected by optical and electron (SEM and
TEM) microscopies, while structure was studied by Fourier transformed infrared spectroscopy, FTIR. Thermal behavior was
monitored by differential scanning calorimetry, DSC, while the surface and electrical properties were studied by contact angle
and capacitance measurements, respectively. SBS allowed obtaining mats of nanocomposites constituted by submicrometric
fibers where the MWCNT are uniformly dispersed and well aligned along the PVDF fibers. In this study, several aspects about
structure and thermal behavior of PVDF were clarified in relation to other researches carried out up to the moment. Although
MWCNT concentration did not seem to affect much the fibrous morphology of the SBS materials, the PVDF crystalline structure
and surface properties of the materials were slightly modified. Dielectric behavior of PVDF was highly affected by the presence
of MWCNT leading to a particular change in the permittivity and being possible to obtain a value of 0.023 for the percolation
fraction.
Description
Keywords
Carbon nanotubes, Nanofibers, Poly(Vinylidene Fluoride), Solution blow spinning
Bibliographic citation
Colloid and Polymer Science, (2019), 297(7-8), pp.: 1105–1118.