Influence of PEG-12 Dimethicone addition on stability and formation of emulsions containing liquid crystal.

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dc.contributor.authorAndrade, Fernanda Frota de
dc.contributor.authorSantos, Orlando David Henrique dos
dc.contributor.authorOliveira, Wanderley Pereira
dc.contributor.authorRocha Filho, Pedro Alves da
dc.date.accessioned2017-03-23T17:29:57Z
dc.date.available2017-03-23T17:29:57Z
dc.date.issued2007
dc.description.abstractOil/water emulsions, containing liquid crystals, were developed employing Andiroba oil, PEG-12 Dimethicone and Crodafos CES . It was evaluated the influence of silicone surfactants on the emulsions stability and on the formation of liquid crystalline phases and therefore, physicochemical characteristics, such as rheology and zeta potential, were evaluated. Emulsions were prepared by the emulsions phase inversion method. All the formulations presented lamellar liquid crystalline phases. The PEG-12 Dimethicone addition did not change microscopically the liquid crystalline phases. The emulsions containing silicone demonstrated lower viscosity than those without the additive. This is an important feature, as the silicone did not change the rheological profile; however, the addition of silicone still can be used as a viscosity controller. The formulations had their viscosity increased 15 and 150 days after their preparation. This characteristic shows that the emulsions have their organization increased along the storing time. In the analysis of zeta potential, we could verify that all formulations presented negative values between )39.7 and )70.0 mV. Within this range of values, the emulsion physical stability is high (Fig. 10). It was concluded that the addition of PEG-12 Dimethicone kept the liquid crystalline phase of the emulsion obtained with Crodafos CES , influencing in a positive way in the system stability.pt_BR
dc.identifier.citationANDRADE, F. F. de et al. Influence of PEG-12 Dimethicone addition on stability and formation of emulsions containing liquid crystal. International Journal of Cosmetic Science, v. 29, p. 211-218, 2007. Disponível em: <http://onlinelibrary.wiley.com/doi/10.1111/j.1467-2494.2007.00374.x/abstract>. Acesso em: 10 jan. 2017.pt_BR
dc.identifier.doihttps://doi.org/10.1111/j.1467-2494.2007.00374.x
dc.identifier.issn1468-2494
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/7448
dc.identifier.uri2http://onlinelibrary.wiley.com/doi/10.1111/j.1467-2494.2007.00374.x/abstractpt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectAndiroba oilpt_BR
dc.subjectCosmeticspt_BR
dc.subjectRheologypt_BR
dc.subjectZeta potentialpt_BR
dc.titleInfluence of PEG-12 Dimethicone addition on stability and formation of emulsions containing liquid crystal.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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