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Related Experiment Videos

Effect of physical properties on compression characteristics.

E Shotton, B A Obiorah

    Journal of Pharmaceutical Sciences
    |July 1, 1975
    PubMed
    Summary

    Tablet quality depends on particle shape and compression forces. Spherical particles and high die wall pressure improve tablet formation, preventing capping by facilitating rearrangement and utilizing elastic properties.

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    Area of Science:

    • Pharmaceutical Sciences
    • Materials Science

    Background:

    • Tablet formation is crucial in drug delivery.
    • Understanding powder behavior during compression is key to preventing defects like capping.

    Purpose of the Study:

    • To investigate the relationship between granule shape, compression forces, and tablet quality.
    • To compare the compression behavior of different lactose forms and common pharmaceutical ingredients.

    Main Methods:

    • Measuring force transmission to the die wall using piezoelectric sensors.
    • Comparing compression cycles of lactose granules with varying shapes (spray-dried vs. crystalline).
    • Analyzing tablet formation with acetaminophen and phenacetin under different compression conditions.

    Main Results:

    • Higher axial to radial pressure conversion and sustained die wall pressure correlated with better tablets.
    • Low die wall and residual pressure led to capping with acetaminophen and phenacetin.
    • Direct compression acetaminophen showed higher die wall pressure and no capping.

    Conclusions:

    • Particle shape influences rearrangement under pressure, impacting tablet quality.
    • Elastic properties of solids play a role in tablet formation and defect prevention.
    • Optimizing compression parameters can mitigate capping and improve tablet integrity.

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