Surfactant screening techniques for effective dispersion of carbon black pigment / Bhagyesh Chavan in COLORATION TECHNOLOGY, Vol. 139, N° 5 (10/2023)  

[article]  inCOLORATION TECHNOLOGY > Vol. 139, N° 5 (10/2023) . - p. 507-518 Titre : Surfactant screening techniques for effective dispersion of carbon black pigment Type de document : texte imprimé Auteurs : Bhagyesh Chavan, Auteur ; Swati Nagose, Auteur ; Elvina Rose, Auteur ; Amit Joshi, Auteur Année de publication : 2023 Article en page(s) : p. 507-518 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact Criblage Dispersions et suspensions Mouillage (chimie des surfaces) Noir de carbone Pigments Surfactants Index. décimale : 667.3 Teinture et impression des tissus Résumé : Effective dispersion of a pigment in a colour concentrate is imperative to its performance. A well dispersed pigment yields the true strength of a colour and becomes stabilised in the long run. To accomplish this, a suitable chemistry of the surfactant is a prerequisite for dispersion and stabilisation of the pigment. A plethora of surfactants are available commercially and it is very difficult to choose the right surfactant that suits the pigment chemistry. Carbon black, being difficult to disperse, was chosen in this study to provide dispersion from an effective surfactant. Simple screening processes, if available for these surfactants, can save a huge amount of time and energy compared with the conventional method of conducting individual experiments. This paper discusses the development of such simple surfactant screening techniques, which could make the selection process simpler and quicker. Note de contenu : - EXPERIMENTAL : Pigment selection - Surfactant screening techniques - Final scores of surfactants - ASSESSMENT OF SURFACTANT SCREENING METHODS : Wetting by contact angle - Particle size - Long-term stability - Surfactant adsorptio by TGA - Table 1 : Characterisation of carbon black pigment - Table 2 : Details of surfactants used in the study - Table 3 : Surfactant affiniti towards the pigment by the penetration method - Table 4 : Pigment wetting by capillary action - Table 5 : Composition for pigment - Table 6 : Dispersion check on filter paper - Table 7 : Score of surfactants on light absorption - Table 8 : Score of surfactants - Table 9 : Final scores of surfactants - Table 10 : Contact angles of carbon black pigment with the shortlisted DOI : https://doi.org/10.1111/cote.12667 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12667 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39831 [article]

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