22. August 2016

Abstract Temperature has rarely been examined in twin-screw wet granulation despite the obvious capabilities of the extruder for operating at elevated temperatures. The present work investigates the wetting behavior of a mixture of powders with different sorption characteristics at various temperatures to explain the unique granulation behavior witnessed with high molecular weight hydroxypropyl methylcellulose in a twin-screw extruder. The work studies the twin-screw granulation of a controlled...

27. July 2016

Granules with release-sustaining properties were developed by twin screw hot melt granulation (HMG) using a combination of stearic acid (SA) and high molecular weight polyethylene oxide (PEO) as matrix for a highly water soluble model drug, metoprolol tartrate (MPT). Earlier studies demonstrated that mixing molten SA and PEO resulted in hydrogen bond formation between hydroxyl groups of fatty acid molecules and ether groups in PEO chains. These molecular interactions might be beneficial in...