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In this study, we investigate the shear viscoelasticity of xanthan and hydrophobically modified xanthans at silicone oil/water interface. Xanthan is well known to adopt two distinct conformations in water solution, a rigid conformation at low temperature and a flexible one at high temperature. Hence, we first studied the un-modified xanthan as a function of temperature and showed that its interfacial...
The rheology of renatured xanthan solutions was studied using oscillatory and continuous shear. The effects of temperature, concentration and ionic strength were systematically investigated. These parameters mainly influence the terminal relaxation time of the solutions, while the effect on the high frequency shear modulus is relatively minor. Master curves were obtained by frequency–temperature superposition...
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