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| Prestes,Paula Souza; Peres,Daniela D'Almeida; Freitas,Anderson Zanardi de; Consiglieri,Vladi Olga; Kaneko,Telma Mary; Velasco,Maria Valéria Robles; Baby,André Rolim. |
| ABSTRACT The physicochemical attributes of emulsified systems are influenced by the characteristics of their internal phase droplets (concentration, size and morphology), which can be modified not only by the formulation components, but also by the analytical methodology employed. Thus, the aim of this work involved the physicochemical characterization of cosmetic emulsions obtained from different surfactants, as well as the introduction of the optical coherence tomography (OCT) as the analytical technique employed for the morphological characterization and particle size determination of the formulations. Three emulsions were prepared, differing at the type and concentration of the surfactant used, and their droplet sizes were evaluated through optical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cosmetic emulsions/physicochemical characterization; Surfactants; Optical coherence tomography/morphological characterization; Optical microscopy/morphological characterization; Laser diffraction/morphological characterization. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502016000200273 |
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| Velasco,Maria Valéria Robles; Dias,Tania Cristina de Sá; Freitas,Anderson Zanardi de; Júnior,Nilson Dias Vieira; Pinto,Claudinéia Aparecida Sales de Oliveira; Kaneko,Telma Mary; Baby,André Rolim. |
| The hair thread is a natural fiber formed by keratin, a protein containing high concentration of sulfur coming from the amino acid cystine. The main physical proprieties of the hair depend mostly on its geometry; the physical and mechanical properties of hair involve characteristics to improve: elasticity, smoothness, volume, shine, and softness due to both the significant adherence of the cuticle scales and the movement control (malleability), as well as the easiness of combing, since they reduce the fibers static electricity. The evaluation of these effects on hair may be carried out by several methods, as: optical and electron microscopy, mechanical resistance measuring, shine evaluation and optical coherence tomography (OCT). |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hair/properties; Hair/evaluation; Hair fibers/properties; Hair fibers/evaluation; Hair fibers/characteristics; Optical coherence tomography/analytical application; Optical microscopy/analytical application; Electron microscopy/analytical application. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502009000100019 |
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