Multifunctional poly(vinylidene fluoride) and styrene butadiene rubber blend magneto-responsive nanocomposites based on hybrid graphene oxide and Fe3O4: synthesis, preparation and characterization

Abstract

Functional nanocomposites based on a blend of styrene butadiene rubber (SBR) and polyvinylidene di uoride (PVDF) as the matrix reinforced by a hybrid nano ller system of graphene oxide nanosheets (GOn) and ferromagnetic nanoparticles (Fe 3 O 4 ) at different weight ratios (3.75:1.25; 2.5:2.5 and 1.25:3.75) were successfully prepared and characterized to determine the effect of nano llers hybridization in improving the structural,mechanical, dielectric/electrical, magnetic and thermal properties of a polymer blend (PVDF-SBR) for electromagnetic interference (EMI) shielding applications. Due to the synergy between both nano llers, it was found that the Young's modulus of the nanocomposite containing 5 wt.% of the hybrid nano ller was signi cantly improved (87%), while the strain at yield remained constant due to the low particle content and the rubbery effect of the SBR copolymer. In addition, the degradation temperature of the matrix was shifted from 464°C to 472 °C with the addition of 2.5:2.5 of GOn:Fe 3 O 4 . Finally, the hybrid reinforcement also had a positive effect on the electrical and magnetic properties of the nanocomposites with an improvement that exceeds 30%. By careful selection of synthetic techniques and understanding/exploiting the unique physics of the polymeric nanocomposites in such materials, novel functional polymer-inorganic nanocomposites can be designed and fabricated for new interesting in magneto applications such as superparamagnetism, electromagnetic wave absorption, and electromagnetic interference shielding.

Graphene-Based Hybrid Fillers for Rubber Composites

“…Essabir et al [ 135 ] added graphene oxide nanosheets (GONs) and ferromagnetic nanoparticles (Fe 3 O 4 ) as hybrid fillers to hybrid nanocomposites based on SBR and polyvinylidene difluoride (PVDF). Masterbatches of PVDF/5 wt% nanoparticles (GONs and Fe 3 O 4 ) were prepared by solution mixing in dimethylformamide, followed by mechanical mixing with the matrix (PVDF/SBR blend) to obtain the final composites.…”

Current and future applications of PVDF-carbon nanomaterials in energy and sensing

“…Addition of CNTs together with poly(methyl methacrylate) can change the ability of PVDF to crystallize [40], while addition of GO and magnetic Fe3O4 [41] improves thermal stability, mechanical, electric and magnetic properties, providing promising material for magneto applications. Improving thermal conductivity is crucial for the dissipation of heat in the electronic devices [42].…”

“…. Also, Essabir et al [41] concluded that GO nanosheets and Fe3O4 (added separately or as the hybrid fillers [94] to PVDF) become nucleating centers and thermal stabilizers during the β-phase formation. Similar role of nucleating centers was observed for modified using 3-aminopropyl triethoxysilane) carbon nanotubes, increasing the β-phase content by 103 % [95].…”