caa a22 4500 605466793 CHVBK 20210128100308.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s00397-015-0884-5 doi (NATIONALLICENCE)springer-10.1007/s00397-015-0884-5 Effects of process variables on the yield stress of rheologically modified biomass [Elektronische Daten] [Joseph Samaniuk, C. Scott, Thatcher Root, Daniel Klingenberg] Additives that alter the rheology of lignocellulosic biomass suspensions were tested under conditions of variable pH, temperature, and solid concentration. The effects of certain ions, biomass type, and time after the addition of rheological modifier were also examined. Torque and vane rheometry were used to measure the yield stress of samples. It was found that the effectiveness of rheological modifiers depends on pH over a range of 1.5 to 6, biomass type, concentration of certain ions, and time after addition. The time-dependent properties of rheologically modified biomass are sensitive to the type of rheological modifier, and also to mixtures of these additives, which can result in unexpected behavior. We show that time-dependent rheology is not correlated with time-dependent changes of the water-soluble polymer (WSP) in the aqueous environment, such as slow polymer hydration, suggesting that time-dependent changes in the polymer-fiber interaction may play a more significant role. Springer-Verlag Berlin Heidelberg, 2015 Lignocellulosic biomass nationallicence Rheology nationallicence Rheological modifier nationallicence Mixing nationallicence Yield stress nationallicence Corn stover nationallicence Samaniuk Joseph University of Wisconsin-Madison, 1415 Engineering Drive, 53706, Madison, WI, USA aut Scott C. USDA Forest Service, One Gifford Pinchot Drive, 53726, Madison, WI, USA aut Root Thatcher University of Wisconsin-Madison, 1415 Engineering Drive, 53706, Madison, WI, USA aut Klingenberg Daniel University of Wisconsin-Madison, 1415 Engineering Drive, 53706, Madison, WI, USA aut Rheologica Acta Springer Berlin Heidelberg 54/11-12(2015-12-01), 941-949 0035-4511 54:11-12<941 2015 54 397 https://doi.org/10.1007/s00397-015-0884-5 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/s00397-015-0884-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Samaniuk Joseph University of Wisconsin-Madison, 1415 Engineering Drive, 53706, Madison, WI, USA aut NATIONALLICENCE 700 1- Scott C. USDA Forest Service, One Gifford Pinchot Drive, 53726, Madison, WI, USA aut NATIONALLICENCE 700 1- Root Thatcher University of Wisconsin-Madison, 1415 Engineering Drive, 53706, Madison, WI, USA aut NATIONALLICENCE 700 1- Klingenberg Daniel University of Wisconsin-Madison, 1415 Engineering Drive, 53706, Madison, WI, USA aut NATIONALLICENCE 773 0- Rheologica Acta Springer Berlin Heidelberg 54/11-12(2015-12-01), 941-949 0035-4511 54:11-12<941 2015 54 397