The effects of polymer concentration, shear rate and temperature on the gelation time of aqueous Silica-Poly(ethylene-oxide) “Shake-gels”

• Published in: Journal of colloid and interface science Vol. 517; pp. 1 - 8
• Main Authors: Collini, Harry, Mohr, Markus, Luckham, Paul, Shan, Jiawen, Russell, Andrew
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.05.2018
• Subjects: Colloidal silica; gelation; Gelation time; gels; polyethylene glycol; Polyethylene oxide (PEO); Polymer coil expansion; Rheology; rheometers; Shake-gels; silica; temperature; thermodynamics; viscosity; Colloidal silica; Polyethylene oxide (PEO); Shake-gels; Gelation time; Polymer coil expansion; Rheology

[Display omitted] Aqueous mixtures of silica and Poly(ethylene-oxide) (PEO) are known as “Shake-gels” due to the formation of reversible gels when subject to an applied force, such as shaking. This shear-thickening effect can be observed using a rheometer, via distinct and abrupt increases in the vi...