rheological properties and surface tension of some natural gum aqueous dispersions commonly used in pharmaceutical industries
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چکیده
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Rheological properties and surface tension of Acacia tortuosa gum exudate aqueous dispersions
Steady shear flow properties of Acacia tortuosa gum aqueous dispersions at different concentrations (15–40% w/v) were studied at 20 C using a controlled shear rate Couette rheometer and Mooney–Ewart sensor systems. Flow curves showed shear thinning non-Newtonian behaviour with a tendency to a Newtonian plateau at high-shear rate. The results obtained fitted the Sisko model very well. The influe...
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Dispersions of colloidal particles in aqueous media are widely investigated because of their use in many industrial applications (foods, pharmaceuticals, cosmetics, paints, etc.). Acid-hydrolyzed chitin has been reported to spontaneously disperse into colloidal rod-like crystalline particles, which can form rigid structures. Such colloidal dispersions of acid-degraded chitin can undergo an isot...
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عنوان ژورنال:
research in pharmaceutical sciencesجلد ۷، شماره ۵، صفحات ۰-۰
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