Open AccessEffect of various surfactants on the stability time of kerosene–boron nanofluids
Author(s) -
Shariatmadar Fateme Sadat,
Pakdehi Shahram Ghanbari
Publication year - 2016
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2016.0223
Subject(s) - nanofluid , kerosene , pulmonary surfactant , sorbitan , chemical engineering , suspension (topology) , materials science , boron , viscosity , nanoparticle , particle size , slurry , oleic acid , particle (ecology) , chemistry , nanotechnology , organic chemistry , composite material , fatty acid ester , fatty acid , engineering , biochemistry , mathematics , oceanography , homotopy , geology , pure mathematics
Nanofluid fuels, a new class of nanotechnology‐based fluids, are liquid fuels with a stable suspension of nanometre‐sized particles. The preparation of fuel mixtures and achieving to a stable and long‐term suspension is the key step in nanofluid synthesis. The idea of this work is to suspend nano‐ and micron‐sized boron particles in kerosene, exploring the differences between the complete sedimentation times of particles in fuel at various weight fractions of surfactants and investigating the viscosity of nanofluid at low weight concentration of nanoparticles. Various surfactants including oleic acid, propylene glycol, sorbitan oleate, Tween 85 and CTAB were used to prepare stable kerosene/boron slurries. Suspensions were prepared with varying surfactant loadings of 0.1–2.0% by weight, in steps, for the same particle loading of 0.5 wt%. The results showed that sorbitan oleate was the best surfactant and the optimum weight ratio of boron particle to sorbitan oleate for enhanced stability of nanofluid was determined to be 2. The complete sedimentation time of nanoparticles at the most stable nanofluid was ∼57 h. At low temperature and high weight fraction of particles, nanofluids showed similar 67% enhancement in viscosity properties.