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Possible theoretical treatments for transfer processes through membranes.

A M Rodriguez Bayón1, R Cadórniga Carro

  • 1Departamento de Farmacia y Tecnologia Farmacéutica, Facultad de Farmacia, Universidad Complutense, Madrid, Espáña.

Bollettino Chimico Farmaceutico
|September 1, 1991
PubMed
Summary

This study investigates salicylic acid transfer through membranes using mathematical models. The research identifies the best model to describe the kinetics of this topical drug delivery process.

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Area of Science:

  • Pharmacokinetics
  • Materials Science

Background:

  • Salicylic acid is a common active pharmaceutical ingredient used in topical formulations.
  • Understanding drug transfer kinetics is crucial for effective topical drug delivery.
  • Emulsion formulations (O/W) are frequently used for external pharmaceutical applications.

Purpose of the Study:

  • To study the transfer kinetics of salicylic acid.
  • To evaluate and compare different mathematical models for describing this transfer process.
  • To identify the most suitable mathematical model for the observed salicylic acid transfer.

Main Methods:

  • Experimental determination of salicylic acid transfer through a cellophane membrane.
  • Application of various theoretical mathematical models to experimental data.
  • Comparative analysis of model-fitting to identify the best kinetic descriptor.

Main Results:

  • Mathematical expressions were derived to define salicylic acid transfer kinetics.
  • Comparative analysis indicated a specific mathematical model that best represents the transfer process.
  • The study successfully characterized the diffusion of salicylic acid through the membrane.

Conclusions:

  • Mathematical modeling provides a robust framework for understanding drug transfer.
  • The chosen model accurately describes the kinetics of salicylic acid diffusion from an O/W emulsion.
  • This research contributes to optimizing topical formulation design for enhanced drug delivery.