Adsorption characteristics of ionic and nonionic surfactants on hydrophobic pigment in aqueous medium / Hikmet Sis in COLORATION TECHNOLOGY, Vol. 128, N° 3 (2012)

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 3 (2012) . - p. 244-249 Titre : Adsorption characteristics of ionic and nonionic surfactants on hydrophobic pigment in aqueous medium Type de document : texte imprimé Auteurs : Hikmet Sis, Auteur ; Mustafa Birinci, Auteur Année de publication : 2012 Article en page(s) : p. 244-249 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption Colorants -- Adsorption Hydrophobie Nonylphenol éthoxylates Oléate de sodium Phtalocyanine de cuivre Potentiel zeta Surfactants Index. décimale : 667.3 Teinture et impression des tissus Résumé : The current study is based on the investigation of the adsorption properties of ionic and nonionic surfactants on an organic hydrophobic pigment powder, namely, β-copper phthalocyanine, in aqueous medium. The nonionic surfactants, selected systematically to represent varying degrees of ethoxylation, are nonylphenol ethoxylates, whereas the ionic surfactant is sodium oleate, a carboxylate-type anionic reagent. The adsorption of surfactants was assessed qualitatively by surface analysis of powders, before and after the adsorption of the surfactants. The experimental results were explained by the structural and other properties of the surfactants and the surface properties of the pigment. The specific adsorption of surfactants on pigments was verified by zeta potential measurements, as they altered the zeta potential values to a great extent. Nonionic surfactants decreased the absolute value of the zeta potential of the powder; whereas anionic surfactant sodium oleate shifted the zeta potential to more negative values. On the one hand, Fourier Transform–infrared and X-ray diffraction examinations of the pigments did not show any noticeable evidence for surfactant untreated or treated copper phthalocyanine. On the other hand, thermal analysis (both thermogravimetric and differential thermal analysis) showed clear evidence of the surfactants on both pigments, as substantial changes in thermogravimetric curves were assessed. Note de contenu : - EXPERIMENTAL : Materials - Zeta potential measurements - RESULTS AND DISCUSSION : Zeta potential of copper phthalocyanine blue pigment - Interactions of surfactants and pigments DOI : 10.1111/j.1478-4408.2012.00369.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15128 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
13933	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Analysis of leather oils / R. Craske in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 54, N° 9 (09/1970)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 54, N° 9 (09/1970) . - p. 325-331 Titre : Analysis of leather oils : Part 1. Separation procedures used in the study of sulphated oils Type de document : texte imprimé Auteurs : R. Craske, Auteur ; S. G. Humphries, Auteur Année de publication : 1970 Article en page(s) : p. 325-331 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie analytique huile de pied de bÅ“uf Huile de spermaceti Huiles et graisses Huiles et graisses animales Huiles sulfatées Oléate de sodium Produits de nourriture du cuir Séparation (technologie) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The development work described in this report summarises investigations which have been undertaken with a view to optimising the solvent fractiona-tion procedures. More valid information is presented regarding the principal component types in sulphated oils i.e. neutral ofi (NO), free fatty acids (FFA) and sulpho oil or emulsifier (SO). This is used as a basis for more detailed separations of the main fractions into individual identifiable components. Note de contenu : - Separation of the sulphated and non-sulphated material - Separation of the unsulphated oil into neutral fats and fatty acids - Table 1 : Analysis figures for sperm and neatsfoot oil by the modified Schindler and Hart separations - Table 2 : Results of separations I and II - Table 3 : Results for the addition of sodium oleate - Table 4 : Fatty acid composition based on the pure oil En ligne : https://drive.google.com/file/d/1s6XkBTWUoVCJohrTts3u2zsc9vvskf6O/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37019 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
007086	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 2 / 2)