Open AccessInfluence of SDBS Surfactant on Stability, Thermal Conductivity and Viscosity of h-BN/EG Based Nanofluids
Author(s) -
Syed Shahabuddin,
Syed Nadeem Abbas Shah,
Mohd Faizul Mohd Sabri,
A.K. Pandey
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1127/1/012014
Subject(s) - nanofluid , zeta potential , pulmonary surfactant , thermal conductivity , viscosity , viscometer , adsorption , thermodynamics , materials science , volume (thermodynamics) , chemistry , analytical chemistry (journal) , chromatography , nanoparticle , composite material , nanotechnology , organic chemistry , physics
In present work, an experimental study was carried out to investigate the influence of anionic surfactant (SDBS) on stability, thermal conductivity and viscosity of h-BN/EG based nanofluids. The nanofluids were prepared via two-step method and characterized by using zeta-sizer, thermal property analyser and viscometer. The volume concentration of h-BN (0.05%) remains constant whereas SDBS volume concentration sweep from 0.05% to 2%. Current results indicate, the zeta potential increases with surfactant addition, but overall, zeta potential shows inverse relation with SDBS concentration. As the value reduced from -57.5mV to -40.5mV when SDBS concentration increase from 0.05% to 2%. While the particle size increase (396nm to 817.9nm) linearly with SDBS concentration due adsorption of surfactant molecules. On the other hand, thermal conductivity over temperature range 25°C-50°C shows maximum enhancement ∼6.57% at 25°C for 1 vol% SDBS. However, dynamic viscosity increase abruptly after 0.5 vol% of SDBS. Therefore, 0.5 vol% could be treated as the optimum SDBS concentration with reduced viscosity (∼2.85%) and increased thermal conductivity (∼3.26%) as compared to base fluid at 25°C. Potential of such optimum combination of nanofluids (0.05vol% h-BN with 0.5 vol% SDBS) may be manipulated in circulating fluid thermal management systems.