Keeping dispersions fine

Characterization of Olanzapine – Solid dispersions.

Aim: To enhance the aqueous solubility of olanzapine by using the Solid dispersion technique. Solid dispersions of Olanzapine were prepared by the dispersion method using using PGS and SSG as carriers. Drug:carrier ratios such as 1:1, 1:2, 1:4, 1:6, 1:8 and 1:10 were tried for optimization. Characterization was done by phase solubility, in vitro release, saturation solubility, permeation, wetta...

Rheology of Concentrated Dispersions

In t h i s paper we b r i e f l y p resen t t h e main re levan t physical q u a n t i t i e s i n t h e rheology of concentrated d i spers ions . Main l i n e s o f t h r e e t o p i c s ( s h e a r v i scos i ty , sedimentation ve loc i ty and aggregation processes) a r e then given. The importance o r ordered or random s t r u c t u r e s is emphasized. Nature and i n d u s t i a l processes...

Aqueous Polyalkyne Dispersions

INTRODUCTION The discovery of the conductive properties of conjugated organic polymers in the late 1970s initiated intense investigations of their synthesis, chemistry and physical properties. Today, they are widely studied for various applications, e.g. optoelectronics in displays or organic solar cells. Beyond general academic curiosity towards the generation and properties of unusual nanostr...

Rheology of Food Dispersions

We review the viscous and viscoelastic behaviours of concentrated food emulsions and plant food suspensions. Special attention has been given to the influence that food processing exerts on the rheological characteristics of the abovementioned foodstuffs.

Dispersions and Coatings