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Effects of age on the structure ad bleaching/dyeing behaviour of hair / Haona Wang in COLORATION TECHNOLOGY, Vol. 137, N° 3 (06/2021)
[article]
Titre : Effects of age on the structure ad bleaching/dyeing behaviour of hair Type de document : texte imprimé Auteurs : Haona Wang, Auteur ; Li Kong, Auteur ; Honghui Xia, Auteur ; Jie Min Huang, Auteur ; Bo Deng, Auteur ; Heng Pan, Auteur Année de publication : 2021 Article en page(s) : p. 226-233 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Âge
Caractérisation
Cheveux -- analyse
Cheveux -- Propriétés mécaniques
Cheveux -- Teinture
Décoloration
Etudes comparativesIndex. décimale : 668.5 Parfums et cosmétiques Résumé : The structure and bleaching/dyeing behaviour of hair sampled from people of various ages were investigated to provide guidance for wig-making. Hair surface and cross-sectional morphology were investigated by scanning electron microscopy, whereas the number density and size of melanin granules were evaluated by transmission electron microscopy. The suitability of hair for dyeing was determined by the trade-off between the fracture strength and lightness of bleached samples. Hair collected from 26-year-olds showed the highest number density and the lowest size of melanin granules, thus featuring the lowest mechanical strength reduction and the highest lightness increase after bleaching. The optimal bleaching conditions for such hair were identified as bleaching time = 80 minutes, hydrogen peroxide (H2O2) concentration = 60 mL/L, and bleaching temperature = 75°C. Considering its resilience to damage and favourable dyeing behaviour, hair sampled from 26-year-olds was concluded to be most suitable for wig-making. Thus, the present research provides guidance for the selection of raw materials for wig-making. Note de contenu : - EXPERIMENTAL : Materials - Rinsing of human hairs - Pretreatment and bleaching of human hairs - Dyeing of human hairs - Hair characterisation
- RESULTS AND DISCUSSION : Effects of age on hair surface and cross-sectional morphology - Effects of hair age on the number density and average area of melanin granules - Effects of bleaching on hair fracture strength, lightness, and regularity - Optimal bleaching conditions for 26-year-old hair - Comparison of control, bleached, and dyed 26-year-old hairDOI : https://doi.org/10.1111/cote.12525 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12525 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36089
in COLORATION TECHNOLOGY > Vol. 137, N° 3 (06/2021) . - p. 226-233[article]Réservation
Réserver ce documentLower temperature aluminizing and its effect on improving corrosion resistance of iron treated by surface mechanical attrition treatment / Cheng Zhong in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 1 (01/2011)
[article]
Titre : Lower temperature aluminizing and its effect on improving corrosion resistance of iron treated by surface mechanical attrition treatment Type de document : texte imprimé Auteurs : Cheng Zhong, Auteur ; Wenbin Hu, Auteur ; Yiming Jiang, Auteur ; Bo Deng, Auteur ; Jin Li, Auteur Année de publication : 2011 Article en page(s) : p. 107-116 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aluminiage
Anticorrosifs
Basses températures
Matériaux nanocristallins
Revêtement métallique
Revêtements protecteurs
Traîtements de surface
Usure (mécanique)Index. décimale : 667.9 Revêtements et enduits Résumé : An ultrafine-grained surface layer with the average grain size of about 28 nm in the surface layer was fabricated on a pure Fe plate by the surface mechanical attrition treatment (SMAT). Lower temperature aluminizing treatments of the SMAT samples were investigated by scanning electron microscope and X-ray energy dispersive spectroscope. The electrochemical corrosion behavior of the aluminized SMAT sample was studied in 0.05 mol/L Na2SO4 + 0.05 mol/L H2SO4 solution, in comparison with the original SMAT and the coarse-grained sample. The results showed that SMAT had a negative effect on the corrosion resistance of Fe. An aluminized surface layer was formed on SMAT sample by aluminizing treatment at 400°C, which was much lower than that of the conventional aluminizing treatment. A successive lower temperature aluminizing process made the aluminized layer thicker and continuous. The SMAT sample treated by a successive lower temperature aluminizing had much higher corrosion resistance and exhibited passive behavior, which was due to the formation of a protective passive film. DOI : 10.1007/s11998-010-9280-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9280-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10928
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 1 (01/2011) . - p. 107-116[article]Réservation
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