Rheological behaviors of H-shaped polymers incorporated with short branches under shear and elongational flows via FENE-Rouse model

2018 ◽  
Vol 62 (5) ◽  
pp. 1115-1124 ◽  
Author(s):  
Seung Heum Jeong ◽  
Jun Mo Kim ◽  
Chunggi Baig
2020 ◽  
Author(s):  
Onpreeya Boonrat ◽  
Vimon Tantishaiyakul ◽  
Namon Hirun ◽  
Supagorn Rugmai ◽  
Siriwat Soontaranon

Author(s):  
Yiqun Huang ◽  
Pawan Singh Takhar ◽  
Juming Tang ◽  
Barry G Swanson

Rheological behaviors of high acyl (HA) gellan are not well understood partially because of its relatively late commercialization compared to low acyl gellan. The objective of this study was to investigate the effect of temperature (5-30 °C), calcium (0, 1 and 10 mM) and gellan concentrations (0.0044-0.1000% w/v) on the flow behaviors of high acyl gellan aqueous solutions using rheological tests. Gellan solutions with 0 or 1 mM added Ca++ exhibited shear thinning behavior at gellan concentrations above 0.0125%. The influence of temperature on apparent viscosity (shear rate, 100 s-1) of gellan solutions can be described with an Arrhenius relationship. The apparent viscosity of gellan solution at low concentrations was more sensitive to temperature changes. The addition of Ca++ led to a decrease in flow resistance for a dilute gellan solution (<0.0125%), but an increased resistance for a relatively concentrated gellan solution (>0.0125%).


1988 ◽  
Vol 89 (11) ◽  
pp. 6972-6981 ◽  
Author(s):  
J. D. Schieber ◽  
Hans Christian Öttinger
Keyword(s):  

1994 ◽  
Vol 100 (8) ◽  
pp. 6055-6061 ◽  
Author(s):  
U. S. Agarwal ◽  
R. A. Mashelkar
Keyword(s):  

1985 ◽  
Vol 55 (2) ◽  
pp. 201-203 ◽  
Author(s):  
Y. Rabin ◽  
F. S. Henyey ◽  
R. K. Pathria

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