Rheological studies of semidilute polyacrylamide/carbon nanotube nanofluids

Soares, Meiriane Cristina Faria; Licínio, Pedro; Caliman, Vinicius; Viana, Marcelo Machado; Silva, Glaura G.

doi:10.1007/s10965-013-0261-y

Cited by 9 publications

(1 citation statement)

References 33 publications

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“…CNTs have inherent insolubility in aqueous solvents. Therefore, recent studies have demonstrated great interest in preparing polymerization with the participation of CNTs in water environmental [30][31][32][33][34]. The order of adding ingredients to polymerization is important due to creation a dispersion of a filler in a polymer matrix [25].…”

Section: Nanokompozytowe Kopolimery Szczepione Skrobi Z Nanorurkami Węglowymi -Synteza I Efektywność Flokulacyjnamentioning

confidence: 99%

Nanocomposite starch graft copolymers with carbon nanotubes - synthesis and flocculation efficiency

Schmidt

2020

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Nanocomposite flocculants based on polyacrylamide-grafted starch copolymers with carbon nanotubes (PAM-St-CNT) were prepared using natural polymer -potato starch (St), acrylamide (AM) as monomer and CNTs by in situ polymerization process. The effect of monomer to starch molar ratio, dose of flocculants and content of CNTs in composition on flocculation efficiency were investigated. All materials were characterized by FT-IR (Fourier transform infrared spectroscopy), TGA (thermogravimetric analysis) and DSC (differential scanning calorimetry) methods. An aqueous suspension of kaolin was used for the flocculation studies. The flocculation effectiveness was evaluated on the basis of reduction of suspension absorption and the sludge volume. It was found that synthesized nanocomposites PAM--St-CNT exhibit satisfactory flocculating properties.

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Section: Nanokompozytowe Kopolimery Szczepione Skrobi Z Nanorurkami Węglowymi -Synteza I Efektywność Flokulacyjnamentioning

confidence: 99%

Nanocomposite starch graft copolymers with carbon nanotubes - synthesis and flocculation efficiency

Schmidt

2020

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Polyacrylamide copolymer/aminated carbon nanotube‐based aqueous nanofluids for application in high temperature and salinity

Lima

Amparo

Siqueira

et al. 2018

J of Applied Polymer Sci

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Polymer aqueous nanofluids have numerous industrial applications due to their synergic properties as a polymer and nanoparticle in the same fluid. The main goal of this work was to prepare stable aqueous nanofluids with improved viscosity in high temperature and salinity conditions. Aminated carbon nanotube (OCNT‐TEPA) presented a CN photoemission peak at 285.5 eV in X‐ray photoelectron spectroscopy spectra, which is evidence of a grafting reaction. Fourier transform infrared spectra presented absorption bands attributed to amide and amine bonds. Elemental analyses showed 1.9 and 3.2 mass % N content increases for OCNT‐TEPA and OCNT‐TEPA‐AM, respectively. Samples aged at 70 °C in brine confirmed that the addition of OCNT‐TEPA increased the viscosity of nanofluids to 30% at day 90 compared to acrylamide–acrylic acid copolymer fluids. Nanotubes presented only 35% of the aminated functions compared to carbon black (Lima et al., Carbon 2016, 109, 209) , and their effects in the enhancement of viscosity and thermal and colloidal stability were 2× greater. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46382.

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Conformation and adsorption behavior of associative polymer for enhanced oil recovery using single molecule force spectroscopy

et al. 2014

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Rheological studies of semidilute polyacrylamide/carbon nanotube nanofluids

Cited by 9 publications

References 33 publications

Nanocomposite starch graft copolymers with carbon nanotubes - synthesis and flocculation efficiency

Nanocomposite starch graft copolymers with carbon nanotubes - synthesis and flocculation efficiency

Polyacrylamide copolymer/aminated carbon nanotube‐based aqueous nanofluids for application in high temperature and salinity

Conformation and adsorption behavior of associative polymer for enhanced oil recovery using single molecule force spectroscopy

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