Sonochemical synthesis and rheological properties of shear thickening silica dispersions

Tarig A Hassan; Vijaya K Rangari; Shaik Jeelani

doi:10.1016/j.ultsonch.2010.02.001

Sonochemical synthesis and rheological properties of shear thickening silica dispersions

Ultrason Sonochem. 2010 Jun;17(5):947-52. doi: 10.1016/j.ultsonch.2010.02.001. Epub 2010 Feb 8.

Authors

Tarig A Hassan¹, Vijaya K Rangari, Shaik Jeelani

Affiliation

¹ Materials Science and Engineering, Tuskegee University, Tuskegee, AL 36088, USA.

PMID: 20207575
DOI: 10.1016/j.ultsonch.2010.02.001

Abstract

A sonochemical method has been developed to synthesize shear thickening fluid. This shear thickening fluid (STF) is composed of hard silicon dioxide nanoparticles and polyethylene glycol (PEG) liquid polymer. The combination of flow-able and hard components at a particular composition, results a material with remarkable rheological properties that is suitable for liquid body armor applications. In the present study nine types of STF's have been synthesized with two different types of silica nanoparticles (15 nm and 200 nm) and polyethylene glycol at various weight fractions using a high intensity ultrasonic irradiation. The resultant STF samples were tested for their rheological and thermal properties. The advantages and disadvantages of this process have been discussed.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Nanoparticles / chemistry*
Nanoparticles / radiation effects*
Nanoparticles / ultrastructure
Particle Size
Shear Strength / radiation effects
Silicon Dioxide / chemistry*
Silicon Dioxide / radiation effects*
Sonication*
Temperature
Transition Temperature
Viscosity

Substances

Silicon Dioxide