Solvent and surfactant induced interactions in drug dispersions

Jarl B. Rosenholm*

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    13 Citations (Scopus)

    Abstract

    The interaction between Salbutamol base and Salbutamol sulphate drug particles with a number of non-aqueous and mixed liquids is investigated. The non-aqueous liquids extend form hydrocarbon to halo-hydrocarbon liquids, including propellant liquids previously used in Metered Dose Inhalers. The properties are correlated using two commonly used solvent scales, the Hamaker constant and Solubility parameter scales. The focus is laid on evaluating their relationship to the effective surface charge (ζ-potential), the particle size and their capability to predict the solubility of the drugs. The influence of a standard surfactant, oleic acid on the chosen properties is another topic of key interest. The stability of the dispersions was successfully predicted by the Coulomb interaction model of Morris.

    Original languageEnglish
    Pages (from-to)197-204
    Number of pages8
    JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
    Volume354
    Issue number1-3
    DOIs
    Publication statusPublished - 5 Feb 2010
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Dispersion stability
    • Halogenated hydrocarbons
    • Hamaker constant
    • Hydrocarbons
    • Particle size
    • Propellant liquids
    • Salbutamol base
    • Salbutamol sulphate
    • Solubility
    • Solubility parameter
    • ζ-Potential

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