scholarly journals Viscoelastic Properties for Sol-Gel Transition

Rheology ◽  
10.5772/36550 ◽  
2012 ◽  
Author(s):  
Yutaka Tanaka
Keyword(s):  
Viscoelastic Properties ◽  
Sol Gel ◽  
Sol Gel Transition ◽  
Gel Transition

Role of viscoelasticity in the tube model of airway reopening. II. Non-Newtonian gels and airway simulation

1996 ◽  
Vol 80 (5) ◽  
pp. 1649-1659 ◽  
Author(s):  
S. H. Hsu ◽  
K. P. Strohl ◽  
M. A. Haxhiu ◽  
A. M. Jamieson
Keyword(s):  
Viscoelastic Properties ◽  
Flow Instability ◽  
Sol Gel ◽  
Tube Model ◽  
Airway Reopening ◽  
Pharyngeal Airway ◽  
Airway Tube ◽  
Sol Gel Transition ◽  
Gel Transition

The influence of viscoelastic gels as lining fluids on the pressure-velocity relationships in an airway tube model (Gaver et al. J. Appl. Physiol. 69: 74-85, 1990) was examined. A flow instability was observed due to the occurrence of a sol-gel transition in the viscoelastic properties under flow conditions. We further report measurements of the viscoelastic properties of airway secretions. Airway secretions are gels under small strains and have a yield stress of 4-7 dyn/cm2. Secretions from the pharyngeal airway show lower elasticity than secretions from the trachea. The airway reopening process is simulated using a Weibel lung geometry by incorporating the constitutive equations from the model gel studies and utilizing the rheological data on airway secretions. In these simulations, a "popping-open" phenomenon arises from a flow instability in airway generations 8-14 when the rheological properties of the lining fluids are assumed to be similar to those of pharyngeal secretions. On the basis of these studies, the elasticity of airway secretions plays an important role in airway reopening.

Scaling Behaviour of the Viscoelastic Properties of a Biopolymer System Near the Gel Point

1989 ◽  
Vol 177 ◽  
Author(s):  
M. A. V. Axelos ◽  
M. Kolb
Keyword(s):  
Steady State ◽  
Percolation Theory ◽  
Viscoelastic Properties ◽  
Sol Gel ◽  
Oscillatory Shear ◽  
Gel Point ◽  
Rheological Measurements ◽  
Scaling Behaviour ◽  
Sol Gel Transition ◽  
Gel Transition

ABSTRACTRheological measurements have been performed on pectin-calcium systems close to the sol-gel transition. Two different experimental setups - steady state and oscillatory shear measurements - show scaling of the viscoelastic properties. The results of both types of measurements are consistent with each other and with scalar percolation theory.

Effect of dimethylsulfoxide on the viscoelastic properties and sol–gel transition of cellulose/ionic liquid solutions

RSC Advances ◽  
2015 ◽  
Vol 5 (11) ◽  
pp. 8318-8322 ◽  
Author(s):  
H. Saba ◽  
Y. Yongbo ◽  
W. Jianning ◽  
X. Xiaolin ◽  
W. Kaijian ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Viscoelastic Properties ◽  
Sol Gel ◽  
Liquid Solutions ◽  
Sol Gel Transition ◽  
Rheological Experiments ◽  
Gel Transition

Viscoelastic properties of cellulose solutions with 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) and dimethylsulfoxide (DMSO) as solvents were studied by rheological experiments.

COMPLEX VISCOELASTIC BEHAVIOUR AT THE SOL-GEL TRANSITION

Fractals ◽  
2003 ◽  
Vol 11 (supp01) ◽  
pp. 9-17 ◽  
Author(s):  
LUCILLA DE ARCANGELIS ◽  
EMANUELA DEL GADO ◽  
ANTONIO CONIGLIO
Keyword(s):  
Viscoelastic Properties ◽  
Sol Gel ◽  
Relaxation Behaviour ◽  
Cubic Lattice ◽  
Theoretical Predictions ◽  
Fluctuation Dynamics ◽  
Sol Gel Transition ◽  
Bond Fluctuation ◽  
Good Agreement ◽  
Gel Transition

We present a percolation dynamic model for the study of dynamics at the sol-gel transition. Percolation and bond-fluctuation dynamics result to be suited to study the critical behaviour of the viscoelastic properties and show a complex relaxation behaviour. The results obtained via numerical simulation on the cubic lattice are in good agreement with some theoretical predictions and experimental results.

Viscoelastic properties at the sol-gel transition

2001 ◽  
Vol 171 (1) ◽  
pp. 79-86
Author(s):  
Emanuela Del Gado ◽  
Lucilla de Arcangelis ◽  
Antonio Coniglio
Keyword(s):  
Viscoelastic Properties ◽  
Sol Gel ◽  
Sol Gel Transition ◽  
Gel Transition

Viscoelastic properties near the sol-gel transition

1999 ◽  
Author(s):  
Hirotaka Okabe ◽  
Kazuhiro Hara ◽  
Shoichi Kai
Keyword(s):  
Viscoelastic Properties ◽  
Sol Gel ◽  
Sol Gel Transition ◽  
Gel Transition

Viscoelastic properties of a cross-linked polysiloxane near the sol–gel transition

2001 ◽  
Vol 45 (4) ◽  
pp. 995-1006 ◽  
Author(s):  
P. Tordjeman ◽  
C. Fargette ◽  
P. H. Mutin
Keyword(s):  
Viscoelastic Properties ◽  
Sol Gel ◽  
Sol Gel Transition ◽  
Gel Transition
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