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[Phase diagrams in the binary system].

F Giordano1, A Rossi

  • 1Dipartimento Farmaceutico, Università di Parma.

Bollettino Chimico Farmaceutico
|November 4, 2000
PubMed
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Understanding drug-excipient interactions through phase diagrams is crucial for pharmaceutical formulation development. This review classifies binary phase diagrams based on interaction strength and energy field deformation.

Area of Science:

  • Pharmaceutical Science
  • Physical Chemistry
  • Materials Science

Background:

  • Physico-chemical interactions between drugs and excipients significantly impact pharmaceutical formulation properties.
  • Comprehending these interactions aids in the rational development of dosage forms.
  • Thermal analysis is a key technique for studying drug-excipient systems.

Purpose of the Study:

  • To classify binary phase diagrams based on fundamental physico-chemical properties.
  • To analyze phase diagrams as a function of interatomic interaction strength (UAA, UBB, UAB) and energy field deformation.
  • To provide a framework for predicting and understanding drug-excipient behavior in formulations.

Main Methods:

  • Review and analysis of existing literature on binary phase diagrams.

Related Experiment Videos

  • Application of thermal analysis principles to interpret phase behavior.
  • Classification of phase diagrams based on interaction parameters and solid solution formation.
  • Main Results:

    • Binary phase diagrams range from systems with minimal miscibility to those forming unlimited solid solutions.
    • The classification highlights the correlation between interaction strength and the resulting phase behavior.
    • Analysis provides insights into the thermodynamic driving forces governing dissolution and solid-state interactions.

    Conclusions:

    • Phase diagram classification offers a systematic approach to understanding drug-excipient compatibility.
    • This framework is valuable for guiding formulation design and predicting stability.
    • Further research can leverage this classification for novel drug delivery system development.