Gél-emulziós rendszerek I. Rész fizikai kémiai jellemzés

Translated title of the contribution: Gel-emulsion systems I. Physical-chemical characterisation

M. Szücs, Budai Szabolcs, I. Erös

Research output: Contribution to journalArticle

Abstract

Emulsion gels prepared with polyacrylic acid-alkyl acrylate diblock copolymer surfactants were studied. It was supposed that the polymer surfactants surrounding the oil droplets formed a microgel structure and this structure stabilized the emulsions sterically. This assumption was verified by thermoanalytic investigation. The effect of polymer concentration and the amount of oil on the rheological characteristics, the rate of water evaporation and droplet size distribution was analysed. It was established that gel emulsions had viscoelastic the properties, the viscosity increased exponentially with increasing emulsifier concentration and amount of oil. Water was present in two forms: i) in microgel surrounding oil droplets and ii) in dispersion medium. The distribution of droplet size was generally a monodisperse one, the average droplet size decreased with polymer concentration.

Original languageHungarian
Pages (from-to)11-21
Number of pages11
JournalActa Pharmaceutica Hungarica
Volume78
Issue number1
Publication statusPublished - 2008

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Emulsions
Oils
Gels
Polymers
carbopol 940
Surface-Active Agents
Water
Viscosity

ASJC Scopus subject areas

  • Pharmaceutical Science

Cite this

Gél-emulziós rendszerek I. Rész fizikai kémiai jellemzés. / Szücs, M.; Szabolcs, Budai; Erös, I.

In: Acta Pharmaceutica Hungarica, Vol. 78, No. 1, 2008, p. 11-21.

Research output: Contribution to journalArticle

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