| Titre : |
Nanoscale imaging and quantification of the impact of covalently linked lipids on the hair's surface |
| Type de document : |
texte imprimé |
| Auteurs : |
Gustavo S. Luengo, Auteur ; Philippe Hallegot, Auteur ; Frédéric Leroy, Auteur |
| Année de publication : |
2005 |
| Article en page(s) : |
p. 271-276 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Tags : |
'Science des surfaces' Cheveu 'Microscopie à force atomique' 'Acide 18-méthyléicosanoique' |
| Index. décimale : |
668.5 Parfums et cosmétiques |
| Résumé : |
The role of 18-methyleicosanoic acid was explored using atomic force microscopy techniques. Treatment with a delipidating agent (hydroxylamine) did not change the hair's morphology but dramatically changed its surface tribological properties, providing a high resolution mapping of the delipidation effect and confirming the importance of the presence of this fatty acid. Using nanolithography we were able to gently scratch the outermost surface layer of hair. The obtained depth of penetration remained constant (12–45 Å) and was very close to the average length of the 18-methyl-eicosanoic acid molecule, supporting the assumed model of an ordered monolayer of 18-methyleicosanoic acid on the surface. Taken together, our results suggest that the lipid covering or its grafting strength may not be evenly distributed over the hair surface. The possibilities of combining nanolithography and an analytical method like time of flight secondary ion mass spectroscopy (ToF-SIMS) are discussed.
|
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10449 |
in IFSCC MAGAZINE > Vol. 8, N° 4 (10-11-12/2005) . - p. 271-276
Aller sur edunet
Accueil
Nanoscale imaging and quantification of the impact of covalently linked lipids on the hair's surface in IFSCC MAGAZINE, Vol. 8, N° 4 (10-11-12/2005)
