| Titre : |
Characterization of yield stress and slip behaviour of skin/hair care gels using steady flow and LAOS measurements and their correlation with sensorial attributes |
| Type de document : |
texte imprimé |
| Auteurs : |
S. Ozkan, Auteur ; T. W. Gillece, Auteur ; L. Senak, Auteur ; David J. Moore, Auteur |
| Année de publication : |
2012 |
| Article en page(s) : |
p. 193-201 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Acide polyacrylique
Analyse sensorielle
Caractérisation
Copolymères
Cosmétiques
Epaississants
Gels -- Emploi en cosmétologie
Maléique, Acide
Polyvinyl éther
Polyvinylpyrrolidone
Rhéologie
|
| Tags : |
'Gel main/cheveux' 'Grande amplitude oscillatoire' Rhéologie 'Corrélation sensorielle' 'Limite élasticité' |
| Index. décimale : |
668.5 Parfums et cosmétiques |
| Résumé : |
Gels made with three different polymers widely used as rheology modifiers in cosmetic formulations (cross-linked poly(acrylic acid), cross-linked poly(maleic acid-alt-methyl vinyl ether) copolymer and cross-linked poly(acrylic acid-co-vinyl pyrrolidone) copolymer) were characterized by rheological and sensory evaluation methods to determine the relationship between sensorial perception and corresponding rheological parameters. Both conventional rheological characterization methods and a more recent method, Fourier Transform Rheology with Large Amplitude Oscillatory Flow data (LAOS), were utilized to characterize the material with and without wall slip. Sensorial analyses were implemented in vivo to evaluate the perceived ease of initial and rub-out spreadability, cushion, pick-up and slipperiness attributes of the gels. Results were statistically analysed by both variance (ANOVA) and principle component analysis (PCA). Sensorial panel testing characteristics discriminated the three materials, and PCA analyses revealed that sensory attributes could be well predicted by rheological methods. Rheological experiments, without wall slip, revealed that gel strength in the linear viscoelastic region (LVR) and yield stress of these materials are similar, but exhibit significantly different wall slip and thixotropy behaviour in the low shear rate region under wall slip conditions. Above the critical shear rate, which corresponds to the yield stress, all tested materials did not slip and behaved as conventional, shear thinning polymeric fluids. In particular, the rheological parameters and sensorial perception of the 1% cross-linked vinyl pyrrolidone/acrylic acid copolymer were significantly affected by wall slip and/or thixotropy-related shear banding phenomena. |
| Note de contenu : |
- MATERIALS AND METHODS : Rheological characterization (dynamic oscillatory measurements - Steady torsional flow experiments - Continuous shear rate ramp tests - extensional tests) - Sensory evaluation - Data analysis
- RESULTS AND DISCUSSION : Rheological characterization (steady torsional flow experiment - Continuous stress of shear rate ramp measurements to establish the shear rate dependency of shear stress and viscosity at different gap openings - Extensional tests - Sensory evaluation - Correlation of sensory ratings with conventional rheological parameters - Correlation of sensory ratings with large amplitude oscillaroty shear flow (LAOS) parameters (Chebyshev coefficients) |
| DOI : |
10.1111/j.1468-2494.2012.00702.x |
| En ligne : |
https://onlinelibrary.wiley.com/doi/10.1111/j.1468-2494.2012.00702.x |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14392 |
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 34, N° 2 (04/2012) . - p. 193-201
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Characterization of yield stress and slip behaviour of skin/hair care gels using steady flow and LAOS measurements and their correlation with sensorial attributes in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 34, N° 2 (04/2012)
