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The effect of roller compaction and tableting stresses on pharmaceutical tablet performance

In this research the effect of two fundamental stresses, i.e. the tableting load and roller compaction pressure, on tablet disintegration were investigated. Excipient materials were roller compacted using a range of pressures, and tablets were produced by compressing the consequent granules at varyi...

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Bibliographic Details
Published in:Powder technology 2019-01, Vol.341, p.23-37
Main Authors: Rajkumar, Arthi D., Reynolds, Gavin K., Wilson, David, Wren, Stephen A.C., Salman, Agba D.
Format: Article
Language:English
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Summary:In this research the effect of two fundamental stresses, i.e. the tableting load and roller compaction pressure, on tablet disintegration were investigated. Excipient materials were roller compacted using a range of pressures, and tablets were produced by compressing the consequent granules at varying tableting loads. For this study mannitol, a brittle and soluble material, and microcrystalline cellulose, a deformable and insoluble material, were investigated at varying binary ratios. The tablets were characterised by analysis of the compactibility and a flow cell imaging method was utilised to investigate tablet disintegration in real-time. It was found that the effect of roller compaction (RC) pressure on tablet tensile strength and porosity was dependent on the tableting load used. At low tableting load, the tablet porosity varied depending on the RC pressure used, whereas the tensile strength was largely unaffected. The use of a high tableting load leads to the opposite effect being observed. The tensile strength was highly dependent on the RC pressure used. In terms of the tablet disintegration the RC pressure did not influence the disintegration behaviour when low tableting loads were used as the process was rapid. When higher tableting loads were used, tablets containing granules roller compacted using lower pressure expanded in size larger than when a low RC pressure was used. A low RC pressure also lead to a faster particle release rate was observed. [Display omitted] •Tablet compactibility was studied relative to roller compaction & tableting stress.•Low tableting stress: roller compaction stress greatly affects the porosity.•High tableting stress: roller compaction stress greatly affects the tensile strength.•Tablet disintegration was monitored in real-time using particle imaging method.•Low roller compaction + high tableting stress leads to higher tablet swelling.
ISSN:0032-5910
1873-328X
DOI:10.1016/j.powtec.2018.08.065