Open AccessEffect of oleic acid on the stability and rheology of nanoaluminium/JP‐10 bi‐phase system
Author(s) -
Chen Bing Hong,
Liu Jian Zhong,
Yao Feng,
Li He Ping,
Zhou Jun Hu
Publication year - 2017
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.2017.0108
Subject(s) - thermogravimetric analysis , oleic acid , scanning electron microscope , rheology , fourier transform infrared spectroscopy , materials science , viscosity , surface tension , absorption (acoustics) , infrared spectroscopy , phase (matter) , suspension (topology) , chemical engineering , chemistry , analytical chemistry (journal) , chromatography , composite material , organic chemistry , thermodynamics , biochemistry , physics , mathematics , homotopy , pure mathematics , engineering
Aluminium (Al) nanoparticles absorbed by oleic acid (OA) were prepared to study the effect and mechanism of OA on the stability and rheology of a nanoAl/exo‐tetrahydrodicyclopentadiene (JP‐10) bi‐phase system. The absorption layer was characterised by scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and energy dispersive X‐ray spectroscopy. The effect of OA on the stability and rheology of nanoAl/JP‐10 suspensions was measured. Results show that OA reduces the surface tension of JP‐10 and the contact angle between the two phases. The absorption of OA on the surface of the particles occurred through the reaction between the −COOH of OA the −OH of Al particles. The amount of absorption increased as the concentration of OA increased. Adding OA enhanced the stability of the nanoAl/JP‐10 bi‐phase systems by hindering particles aggregation. A suspension with 5.0% solid load demonstrated no clear layer separation 1 month after preparation with 1.0% OA. OA also reduced the viscosity of the systems. A 0.5% concentration of OA is best for a system with 20% solid load. The viscosity‐reducing effect of OA was determined by its comparative amount, and the ratio of OA/Al should be above 2.5%.