Gelation via Ion Exchange in Discotic Suspensions
نویسندگان
چکیده
منابع مشابه
Particle configurations and gelation in capillary suspensions
When a small amount (less than 1%) of a second immiscible liquid is added to the continuous phase of a suspension, the rheological properties of the admixture are dramatically altered and can change from a fluid-like to a gel-like state. These so-called capillary suspensions transition to a gel-like state both if the secondary liquid preferentially wets the particles (pendular state) and even i...
متن کاملFlow-induced gelation of microfiber suspensions.
The flow behavior of fiber suspensions has been studied extensively, especially in the limit of dilute concentrations and rigid fibers; at the other extreme, however, where the suspensions are concentrated and the fibers are highly flexible, much less is understood about the flow properties. We use a microfluidic method to produce uniform concentrated suspensions of high aspect ratio, flexible ...
متن کاملFeasibility of Calcium Alginate Microcapsules of Oral Sustained Release Suspensions of Propranolol Hydrochloride Using Ion Exchange Resinates
An oral suspension could a suitable dosage form for the geriatric patients. The calcium alginate coated ion exchange resinate of propranolol hydrochloride were prepared using Amberlite IR-120 by solvent evaporation. Microcapsules of propranolol hydrochloride resinate were prepared by solvent evaporation technique,the suspensions were prepared by using deionised water as the vehicle. Methy...
متن کاملSize dependence of microprobe dynamics during gelation of a discotic colloidal clay
oft materials, such as gels and colloidal glasses, often exhibit different rheological properties at ulk and microscopic scales as a result of their complex microstructure. This phenomenon has ecently been demonstrated for a gel-forming aqueous dispersion of Laponite clay Oppong et al. hys. Rev. E 78, 021405 2008 . For this material, microrheology reveals a significantly weaker el and a longer ...
متن کاملIon Pair Activities in Bentonite Suspensions
The thermodynamic activities of ion pairs were measured el~ctrometrically in a series of aqueous mixtures of monoionic bentonite and the corresponding chlorides. Ion exchange membranes and Ag-AgC1 electrodes were used. The lyotropie order for the various cation species varied somewhat for two different preparations. The apparent relative escaping tendencies of the various cations did not corres...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2012
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.108.247802