Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 138, Issue 4, Pages -Publisher
WILEY
DOI: 10.1002/app.49719
Keywords
functionalization of polymers; ionic liquids; rheology; viscosity and viscoelasticity
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This paper presents a novel shear thickening and dispersing system, which shows better stability and shear thickening effect compared to traditional systems. It provides a new idea for further development of protective materials using STF.
Shear thickening liquid (STF) is a new nonNewtonian fluid widely used in industrial production. In this paper, a novel shear thickening and dispersing system, namely poly methyl methacrylate (PMMA)/1-butyl-3-methylimidazole hexa-fluorophosphate ([BMIM]PF6), was prepared using ultrasonic with PMMA as the dispersing phase and [BMIM]PF(6)as the dispersing medium. The stability, thixotropic, reversibility, rheology, and viscoelasticity of the dispersion system was studied, respectively. The dispersed system has good stability. The dispersed system shows high response sensitivity to shear rate, as well as good reversibility to shear thickening. Compared with traditional silicon dioxide/polyethylene glycol dispersion system, PMMA/[BMIM]PF(6)dispersion system displays a significantly enhanced shear thickening effect. Nonionic surfactant triton X-100 of 4 wt% can greatly improve PMMA/[BMIM]PF(6)dispersion system's shear thickening behavior. This paper provides a new idea for the further development of protective materials by using STF.
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