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Effect of temperature on alpha olefin sulfonate induced softening of gelatin hydrogels
Mazin Ahmad Abed1, H B Bohidar
1School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
Abstract:
Dynamic light scattering (DLS) and oscillatory rheology experiments were performed to study temperature dependence (T=10-25 degrees C) of the interactions in hydrogels of gelatin with AOS (alpha olefin sulfonate, anionic surfactant) for surfactant concentrations in the range 25-100 mM, chosen larger than cmc (approximately 8mM). The network mesh size (xi) values deduced from fastmode diffusivity (D(f)) data obtained from dynamic structure factor measurements, S(q, t) approximately exp(-D(f)q(2)t) (for t
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