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Glycerol-Silicone Elastomers as Active Matrices with Controllable Release Profiles.

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Polymer Chemistry

Background:

  • Controlled drug release is crucial for optimal therapeutic effects.
  • Achieving zero-order release kinetics is challenging, often complicated by an initial burst release.
  • Existing drug delivery systems face difficulties in formulating zero-order release profiles.

Purpose of the Study:

  • To develop a straightforward synthesis for elastomeric composites with tunable drug release.
  • To investigate the influence of glycerol content on release kinetics (zero-order vs. first-order).
  • To assess the potential for burst-effect-free drug delivery.

Main Methods:

  • Synthesis of silicone-glycerol elastomeric composites with dispersed active substances.
  • Characterization of drug release kinetics by varying glycerol content and other structural parameters.
  • Evaluation of water absorption properties of the developed composites.

Main Results:

  • Release kinetics were tunable from zero-order to first-order by adjusting glycerol content.
  • No burst release effect was observed from the elastomeric matrices.
  • Composites demonstrated significant tunable water absorption capabilities (up to 1850% of sample mass).

Conclusions:

  • Silicone-glycerol composites provide a versatile platform for controlled drug delivery.
  • The system allows for precise tuning of release rates and elimination of burst effects.
  • These materials show promise for advanced drug delivery applications and water absorption technologies.