The viscosity of oxygen-functionalized multi-walled carbon nanotube (O-MWCNT)
nanofluids was measured for concentrations from 0.1 to 10 ppm under conditions
of 0 to 30 MPag pressures and 0 to 10 C temperatures. The presence of O-MWCNTs
did not affect the temperature dependence of viscosity but did reduce the
effective viscosity of solution due to cumulative hydrogen bond-disrupting
surface effects, which overcame internal drag forces. O-MWCNTs added a weak
pressure dependence to the viscosity of solution because of their ability to
align more with the flow direction as pressure increased. In the liquid to
hydrate phase transition, the times to reach the maximum viscosity were faster
in O-MWCNT systems compared to the pure water baseline. However, the presence
of O-MWCNTs limited the conditions at which hydrates formed as increased
nanoparticle collisions in those systems inhibited the formation of critical
clusters of hydrate nuclei. The times to viscosity values most relevant to
technological applications were minimally 28.02 % (200 mPa s) and 21.08 % (500
mPa s) slower than the baseline, both in the 1 ppm system, even though all
systems were faster to the final viscosity. This was attributed to O-MWCNT
entanglement, which resulted in a hydrate slurry occurring at lower viscosity
values.
%0 Journal Article
%1 mcelligott2023dynamic
%A McElligott, Adam
%A Guerra, André
%A Du, Chong Yang
%A Rey, Alejandro D.
%A Meunier, Jean-Luc
%A Servio, Phillip
%D 2023
%K Ar4
%R 10.1039/D2NR02712G
%T Dynamic Viscosity of Methane Hydrate Systems from Non-Einsteinian,
Plasma-Functionalized Carbon Nanotube Nanofluids
%U http://arxiv.org/abs/2306.16253
%X The viscosity of oxygen-functionalized multi-walled carbon nanotube (O-MWCNT)
nanofluids was measured for concentrations from 0.1 to 10 ppm under conditions
of 0 to 30 MPag pressures and 0 to 10 C temperatures. The presence of O-MWCNTs
did not affect the temperature dependence of viscosity but did reduce the
effective viscosity of solution due to cumulative hydrogen bond-disrupting
surface effects, which overcame internal drag forces. O-MWCNTs added a weak
pressure dependence to the viscosity of solution because of their ability to
align more with the flow direction as pressure increased. In the liquid to
hydrate phase transition, the times to reach the maximum viscosity were faster
in O-MWCNT systems compared to the pure water baseline. However, the presence
of O-MWCNTs limited the conditions at which hydrates formed as increased
nanoparticle collisions in those systems inhibited the formation of critical
clusters of hydrate nuclei. The times to viscosity values most relevant to
technological applications were minimally 28.02 % (200 mPa s) and 21.08 % (500
mPa s) slower than the baseline, both in the 1 ppm system, even though all
systems were faster to the final viscosity. This was attributed to O-MWCNT
entanglement, which resulted in a hydrate slurry occurring at lower viscosity
values.
@article{mcelligott2023dynamic,
abstract = {The viscosity of oxygen-functionalized multi-walled carbon nanotube (O-MWCNT)
nanofluids was measured for concentrations from 0.1 to 10 ppm under conditions
of 0 to 30 MPag pressures and 0 to 10 C temperatures. The presence of O-MWCNTs
did not affect the temperature dependence of viscosity but did reduce the
effective viscosity of solution due to cumulative hydrogen bond-disrupting
surface effects, which overcame internal drag forces. O-MWCNTs added a weak
pressure dependence to the viscosity of solution because of their ability to
align more with the flow direction as pressure increased. In the liquid to
hydrate phase transition, the times to reach the maximum viscosity were faster
in O-MWCNT systems compared to the pure water baseline. However, the presence
of O-MWCNTs limited the conditions at which hydrates formed as increased
nanoparticle collisions in those systems inhibited the formation of critical
clusters of hydrate nuclei. The times to viscosity values most relevant to
technological applications were minimally 28.02 % (200 mPa s) and 21.08 % (500
mPa s) slower than the baseline, both in the 1 ppm system, even though all
systems were faster to the final viscosity. This was attributed to O-MWCNT
entanglement, which resulted in a hydrate slurry occurring at lower viscosity
values.},
added-at = {2023-08-29T11:37:26.000+0200},
author = {McElligott, Adam and Guerra, André and Du, Chong Yang and Rey, Alejandro D. and Meunier, Jean-Luc and Servio, Phillip},
biburl = {https://www.bibsonomy.org/bibtex/29b0cae820fbcfdd0e75927aa2688c7af/hy},
doi = {10.1039/D2NR02712G},
interhash = {a82bbdd5d9ff1b7f8be8d41cba2381b9},
intrahash = {9b0cae820fbcfdd0e75927aa2688c7af},
keywords = {Ar4},
note = {cite arxiv:2306.16253},
timestamp = {2023-08-29T11:37:26.000+0200},
title = {Dynamic Viscosity of Methane Hydrate Systems from Non-Einsteinian,
Plasma-Functionalized Carbon Nanotube Nanofluids},
url = {http://arxiv.org/abs/2306.16253},
year = 2023
}