caa a22 4500 605466262 CHVBK 20210128100306.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00397-014-0821-z doi (NATIONALLICENCE)springer-10.1007/s00397-014-0821-z UV-visible assessment of hydrocluster formation and rheological behaviour in bimodal and mono-disperse shear thickening fluids [Elektronische Daten] [Masoud Fahool, Ali Sabet] When an applied shear to a fluid results in a steep rise in its viscosity, it is referred to as shear thickening fluid (STF). This study followed two aims: first, to investigate the hydrocluster formation in STF using a novel technique via UV-visible spectroscopy in bimodal and mono-dispersed systems and second, to study the rheological response of bimodal as against mono-dispersed nano-sized silica particles in an STF system. Two nano-sized silica particles (50-nm fumed silica and 12-nm colloidal silica) were dispersed in polyethylene glycol in various compositions and compared with mono-dispersed STF. Bimodal STF in 30 and 35wt.% (with different ratios of the two nanoparticles) and mono-disperse in 35, 40 and 45wt.% of OX50 silica particles were prepared. Results showed a lower critical shear rate for the shear thickening in bimodal STF than that in mono-dispersed STF. Also, bimodal system results in reduced amount of nanoparticle used. Higher viscosities were also observed in different composition of bimodal system. Springer-Verlag Berlin Heidelberg, 2014 Shear thickening fluid nationallicence UV-visible nationallicence Hydrocluster nationallicence Bimodal nationallicence Mono-disperse nationallicence Fahool Masoud Department of Composites, Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965/115, Tehran, Iran aut Sabet Ali Department of Composites, Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965/115, Tehran, Iran aut Rheologica Acta Springer Berlin Heidelberg 54/1(2015-01-01), 77-83 0035-4511 54:1<77 2015 54 397 https://doi.org/10.1007/s00397-014-0821-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00397-014-0821-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fahool Masoud Department of Composites, Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965/115, Tehran, Iran aut NATIONALLICENCE 700 1- Sabet Ali Department of Composites, Iran Polymer and Petrochemical Institute (IPPI), PO Box 14965/115, Tehran, Iran aut NATIONALLICENCE 773 0- Rheologica Acta Springer Berlin Heidelberg 54/1(2015-01-01), 77-83 0035-4511 54:1<77 2015 54 397