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Related Experiment Videos

[Evaluation of substrate-binder interfacial interactions]

R Zelkó1, F Kiekens, I Antal

  • 1Semmelweis Orvostudományi Egyetem, Gyógyszerészeti Intézet, Budapest.

Acta Pharmaceutica Hungarica
|May 21, 1998
PubMed
Summary

Understanding substrate-binder interactions is key for solid dosage forms. Increased binder content enhances adhesion and improves mechanical properties of granules and tablets.

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Area of Science:

  • Pharmaceutical Sciences
  • Materials Science

Background:

  • Pharmaceutical formulations rely on granules and compressed solids.
  • Optimizing mechanical properties of solid dosage forms is crucial for manufacturing and efficacy.
  • Understanding substrate-binder interactions is fundamental to achieving desired material properties.

Purpose of the Study:

  • To evaluate substrate-binder interfacial interactions.
  • To correlate physico-chemical and mechanical properties of granules and compressed samples with binder content.
  • To determine the impact of interfacial interactions on the mechanical integrity of solid dosage forms.

Main Methods:

  • Analysis of physico-chemical properties of granules and compressed samples.
  • Mechanical testing, including breaking strength measurements.
  • Diffuse reflectance spectroscopy to assess binder content and interactions.

Main Results:

  • A linear relationship was observed between breaking strength, diffuse reflectance, and binder content.
  • Enhanced adhesive interactions between substrate and binder were noted with increasing binder amounts.
  • Physico-chemical interactions at the substrate-binder interface fundamentally dictate particle and compressed sample mechanical properties.

Conclusions:

  • The mechanical properties of pharmaceutical solid dosage forms are governed by substrate-binder interfacial interactions.
  • Qualitative and quantitative evaluation of these interactions is critical for formulation development.
  • Effective in-process control of solid dosage forms relies on understanding these interfacial dynamics for optimal mechanical performance.

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