Nanomorphology and nanomechanical characteristics of solution‐blow‐spun PVDF‐based fibers filled with carbon nanotubes

ABSTRACT Fibers of poly(vinylidene fluoride) (PVDF) filled with multiwalled carbon nanotubes (MWCNTs) were prepared by solution blow spinning (SBS). The influence of the MWCNTs on the surface morphology and mechanical behavior of single fibers was studied. The morphology of the materials prepared an...

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Bibliographic Details
Published in:Journal of applied polymer science 2019-03, Vol.136 (10), p.n/a
Main Authors: González‐Benito, Javier, Olmos, Dania, Teno, Jorge, González‐Gaitano, Gustavo
Format: Article
Language:English
Subjects:
Atomic force microscopy
atomic force microscopy (AFM)
carbon nanotubes
Dispersion
Fibers
Materials science
Mechanical analysis
mechanical behaviour
Mechanical properties
Microscopes
Microscopy
Modulus of elasticity
Morphology
Multi wall carbon nanotubes
Nanoindentation
Optical microscopy
poly(vinylidene fluoride) PVDF
Polymers
Polyvinylidene fluorides
solution blow spinning (SBS)
Spinning (materials)
Stiffness
Topography
Transmission electron microscopy
Vinylidene fluoride
Weight
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Summary:ABSTRACT Fibers of poly(vinylidene fluoride) (PVDF) filled with multiwalled carbon nanotubes (MWCNTs) were prepared by solution blow spinning (SBS). The influence of the MWCNTs on the surface morphology and mechanical behavior of single fibers was studied. The morphology of the materials prepared and the dispersion of the MWCNTs within the polymer were studied by optical microscopy (OM) and transmission electron microscopy (TEM), while atomic force microscopy (AFM) was used to inspect the topography of single fibers and to perform nanoindentation tests. OM and TEM images indicated a good dispersion of the MWCNTs within the PVDF. AFM images evidenced clear changes in the topography of the blow‐spun fibers when the MWCNTs were present in the polymer. A greater amount of MWCNTs in the PVDF led to more heterogeneous fiber surfaces. The nanoindentation force curves revealed that the stiffness was practically constant along the fibers, which indicated that the mechanical response was homogeneous and, in turn, an even distribution of the MWCNTs. The incorporation of the MWCNTs produced a mechanical reinforcement of the PVDF fibers, showing increases of 31% and 49% in the elastic modulus when 1% and 5% by weight of MWCNTs were added to the polymer, respectively. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47115. Solution blow spinning (SBS) has been used to obtain submicrometric nanocomposite fibers based on poly(vinylidenefluoride), PVDF. Fibers were loaded with multi‐walled carbon nanotubes, MWCNT, which resulted well dispersed in the polymer matrix. Morphology and mechanical behavior are studied at nanoscale from nanoindentation tests to understand the influence of the presence of MWCNT.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.47115