caa a22 4500 475764757 CHVBK 20180406123602.0 cr unu---uuuuu 170329e20000501xx s 000 0 eng 10.1007/s003960050544 doi (NATIONALLICENCE)springer-10.1007/s003960050544 Flow behaviour of titanium dioxide dispersions in the presence of 2-hydroxyethyl cellulose [Elektronische Daten] [A. V. M. Chandramalar, S. K. Kua, C. Y. Chan, Y. Y. Lim, Y. K. Leong]  The effects of 2-hydroxyethyl cellulose (HEC) of weight-average molecular weight 15,000, 90,000 and 7,20,000 on the rheological properties of TiO2 dispersions were evaluated. For all three HECs, the maximum yield stress, τymax, (occurred at zero zeta potential), decreased with increasing HEC concentration. Interestingly, the largest reduction in τymax was observed with the HEC with the highest molecular weight. This reduction was attributed to steric interaction arising from adsorbed HEC. Adsorbed high-molecular-weight HEC formed an effectively thicker steric barrier because of its larger size and higher adsorption capacity. Bridging interactions that were expected to be important for the high-molecular-weight HEC were found to be unimportant here. In the flocculated regime, HEC enhanced the shear-thinning characteristics of the TiO2 dispersions. Springer-Verlag Berlin Heidelberg, 2000 Key words 2-hydroxyethyl cellulose nationallicence Titanium dioxide nationallicence Molecular weight nationallicence Steric yield stress nationallicence Viscosity nationallicence Chandramalar A. V. M. Department of Chemistry University of Malaya 50603 Kuala Lumpur, Malaysia, MY aut Kua S. K. Department of Chemistry University of Malaya 50603 Kuala Lumpur, Malaysia, MY aut Chan C. Y. Department of Chemistry University of Malaya 50603 Kuala Lumpur, Malaysia, MY aut Lim Y. Y. School of Engineering & Science Monash University (Sunway Malaysia) Bandar Sunway, 46150 Petaling Jaya Malaysia, MY aut Leong Y. K. School of Engineering James Cook University Townsville 4811, Australia, AU aut https://doi.org/10.1007/s003960050544 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s003960050544 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chandramalar A. V. M. Department of Chemistry University of Malaya 50603 Kuala Lumpur, Malaysia, MY aut NATIONALLICENCE 700 1- Kua S. K. Department of Chemistry University of Malaya 50603 Kuala Lumpur, Malaysia, MY aut NATIONALLICENCE 700 1- Chan C. Y. Department of Chemistry University of Malaya 50603 Kuala Lumpur, Malaysia, MY aut NATIONALLICENCE 700 1- Lim Y. Y. School of Engineering & Science Monash University (Sunway Malaysia) Bandar Sunway, 46150 Petaling Jaya Malaysia, MY aut NATIONALLICENCE 700 1- Leong Y. K. School of Engineering James Cook University Townsville 4811, Australia, AU aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer