Abstract
The effects of binder solutions on granule size, intragranular porosity and liquid saturation in a high shear mixer are examined during the liquid addition phase of the granulation process. The power consumption profiles of impeller motor are recorded. Five different binders (PVP, PVP-PVA-copolymer, hydrolysed gelatine and two HPMC'S) are investigated.The PVP and hydrolysed gelatine produce granules with a higher mean granule size. This is shown to be due to the higher densification caused by these binders.The power consumption profiles for PVP are significantly higher than for the other binder solutions. It is suggested that the high power consumption profiles are a result of the strength of mobile liquid bondings caused by the high surface tension of PVP solutions.
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