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  • 1 University of Szeged Faculty of Pharmacy, Department of Pharmaceutical Technology Eötvös u. 6 6720 Szeged Hungary
  • 2 University of Pavia Centro Grandi Strumenti Via Bassi 21 27100 Pavia Italy
  • 3 University of Pavia Faculty of Pharmacy, Department of Pharmaceutical Chemistry Viale Taramelli 12 27100 Pavia Italy
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Polymeric emulsifiers provide exceptional stability to oil-in-water, water-in-oil or multiple emulsions by their steric stabilization. Pemulens as polymeric emulsifiers are able to stabilize o/w type emulsions because their short lipophilic part integrates into the oil droplets while their long hydrophilic part forms a micro gel around the droplet. In our present study the microstructure and integration of the polymeric emulsifier at the water-oil interface was investigated with thermogravimetric and microscopical methods. It was established that depending on the amount of both of the polymeric emulsifier and added coemulsifier the microstructure of the system changes.