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Research Article

Moisture-Activated dry Granulation in a high Shear Mixer

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Pages 2195-2213 | Published online: 20 Oct 2008
 

Abstract

The applicability of a 25 litre high shear mixer for moisture-activated dry granulation was examined. Microcrystalline cellulose, potato starch or a mixture of 50% m/m of each was used as moisture absorbing material. The effects of water content, wet massing time, moisture absorbing material and dry mixing time on the size distribution, and the compressibility of the granulations were investigated. Tablets were compressed on a single punch press from all the granulations and on a rotary press from a few of the granulations.

It was shown that the physical properties of the tablets were primarily affected by the water content, the moisture absorbing material, and the compression force. Tablets with low mass variation, high crushing strength, low friability, and short disintegration time were achieved with both tablet presses by using a mixture of microcrystalline cellulose and potato starch as moisture absorbing material.

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