Influence of polymer-surfactant interactions on o/w emulsion properties and microcapsule formation

Journal of Colloid and Interface Science
Lidija B PetrovicJadranka L Milanovic

Abstract

The aim of this work was to investigate the influence of interactions between 1.00%w/w hydroxypropylmethyl cellulose (HPMC) and the anionic surfactant sodium dodecylsulfate (SDS) on the properties of 20%w/w sunflower oil/water emulsion and the corresponding microcapsules obtained by spray drying technique. On the basis of the viscosity and rheological measurements, particle size and particle size distribution, and stability assessment, it was concluded that the emulsion characteristics depend strongly on the interaction mechanism. Significant increase in viscosity and non-Newtonian thixotropic behavior was observed in the SDS concentration range from 0.15 to 1.00%w/v, corresponding to HPMC-SDS interactions in the continuous phase. In the interaction region, a three-dimensional network is formed in the continuous phase by intermolecular binding of SDS molecules to the adjacent HPMC chains, which contributes to increase in the viscosity and thixotropic properties. The mean diameter of emulsion particles, d(vs), decreases with increase in SDS concentration, but emulsion stability depends on the adsorption layer structure, i.e. HPMC-SDS interactions. The HPMC/SDS complex adsorbed at the o/w interface makes the layer more compact, e...Continue Reading

References

Dec 14, 2004·Journal of Colloid and Interface Science·Eri AkiyamaTomohito Kitsuki
Sep 6, 2005·Journal of Colloid and Interface Science·Aiqian Ye, Harjinder Singh
Nov 18, 2005·Journal of Colloid and Interface Science·Annika RidellStefan Nilsson
May 5, 2009·Journal of Colloid and Interface Science·Oscar E PérezJuan M Rodríguez Patino

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Citations

Nov 26, 2013·Advances in Colloid and Interface Science·S AidarovaR Miller
Jun 15, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Bappaditya NaskarSatya P Moulik
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Nov 21, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Oyais Ahmad ChatAijaz Ahmad Dar
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Jul 4, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Boping Ren, Yong Kang
May 24, 2019·Journal of Agricultural and Food Chemistry·Wenhui LvHao Hu

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