Adsorption and desorption of ionic surfactants / T. Pusic in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 47, N° 3/2010 (24/05/2010)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 47, N° 3/2010 (24/05/2010) . - p. 173-178 Titre : Adsorption and desorption of ionic surfactants Type de document : texte imprimé Auteurs : T. Pusic, Auteur ; A. M. Grancaric, Auteur ; A. Tarbuk, Auteur ; O. Sauperl, Auteur ; I. Soljacic, Auteur Année de publication : 2010 Article en page(s) : p. 173-178 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Surfactants  Adsorption  Désorption  Fibre  'Potentiel  électrocinétique''Valeur  de  rétention  d'eau'  WRV Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Surfactants as organic compounds are widely used in the processes of textile finishing and care with regard to different variations and specific hydrophilic/hydrophobic character. Specific behaviour of these compounds is partly based on the adsorption process. In this study the adsorption and desorption of ionic surfactants have been studied upon the influence of fibre composition and surfactant ionogenity as well as variation of hydrophobic chain length and hydrophilic group in the molecule. Textile fibres were characterized through electrokinetic potential, sorption characteristics and swelling capacity expressed by moisture regain and water retention value (WRV). Different types of cationic and anionic surfactants were adsorbed on cotton, wool, polyester and polypropylene fibres at 20°C during 60 minutes. The quantity of adsorbed surfactants on textile fibres was determined by potentiometric titration. The textile fibres were centrifuged afterwards and the amount of surfactants was determined in the centrifugate, respectively. Drying followed at 60°C. The desorption of surfactants was performed at 20°C during 30 minutes. The results showed a correlation between amount of adsorbed, desorbed and residual surfactants and swelling capacity expressed through WRV. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9468 [article]

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The Impact of Fluorescent Compounds on the Change in Shade of Pastel Colored PES/Cotton Fabrics / T. Pusic in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 45, N° 6/2008 (11-12/2008)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 45, N° 6/2008 (11-12/2008) . - p. 314-319 Titre : The Impact of Fluorescent Compounds on the Change in Shade of Pastel Colored PES/Cotton Fabrics Type de document : texte imprimé Auteurs : T. Pusic, Auteur ; I. Solijacic, Auteur Année de publication : 2008 Article en page(s) : p. 314-319 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Laundering  Fluorescent  whitening  agent  UV  absorber  Polyester  cotton  fabric  Pastel  shade Résumé : Functionalization of textiles in the finishing and care processes is an outstanding topic today. Ultraviolet (UV) protective properties of textiles can be improved by the implementation of fluorescent compounds in the finishing and laundering processes. The investigation described is focused on the addition of a fluorescent whitening agent (FWA) and an UV absorber (UVA) during frequent laundering of bleached and pastel colored polyester/cotton fabrics in the reference ECE detergent at 40°C. The effect of the UVA containing detergent includes improved whiteness of bleached textiles and excellent UV protection properties during multiple cycles. The bleaching performance of the FWA is similar in offering good UV protection. In the case of the pastel colored fabrics after the launderings, UV protection is excellent too, but the negative impact of the fluorescent compounds on the changes in shade is evident. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2828 [article]

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