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Synthesis of dodecyl lauroyl benzene sulfonate and its application in enhanced oil recovery / Zhen-Gang Cui in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 5 (09-10/2011)
[article]
Titre : Synthesis of dodecyl lauroyl benzene sulfonate and its application in enhanced oil recovery Type de document : texte imprimé Auteurs : Zhen-Gang Cui, Auteur ; Le Wu, Auteur ; Mingming Sun, Auteur ; Jian-Zhong Jiang, Auteur ; Feng Wang, Auteur Année de publication : 2011 Article en page(s) : p. 409-414 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dodécylbenzènesulfonate de lauryle -- Synthèse
Surfactants -- SynthèseTags : 'Synthèse dodécylebenzène sulfonate lauroyle' 'alkali/surfactant/polymère' Surfactants 'Récupération améliorée huile' 'Tension interfaciale très réduite' 'Alkylbenzène lourd' Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : A new hydrophobic surfactant, dodecyl lauroyl benzene sulfonate (DLBS), was synthesized and its application in enhanced oil recovery by alkali-surfactant-polymer (ASP) flooding was studied. The results show that DLBS can be synthesized by reaction of industrial dodecyl benzene with lauroyl chloride in the presence of AlCl3, followed by sulfonation with ClSO3H and neutralization with NaOH. The lauroyl-group is confirmed to be connected to the para-position of the alkylbenzene by1HNMR spectrum. The synthesized DLBS is well soluble in pure water and reservoir (connate) water at 45 °C. It is highly surface active which is indicated by its low CMC of 1.1 · 10–5mol/L, and its low surface tension, γmc of 28.6 mN m–1. By mixing with heavy alkylbenzene sulfonates of relatively low average molar mass (387g mol–1) at a total surfactant concentration of 5 mM, DLBS can reduce the interfacial tension of Daqing crude oil/connate water to an order of 10–3mN/m at 45 °C in the presence of 0.5–1.0 wt.% NaOH and 1000 mg L–1of polymer. If the NaOH was replaced by a gentle alkaline salt, Na2CO3, certain amounts of dodecyl dimethyl carboxy betaine were added and the concentration of Na2CO3was increased to 1.2–2.0 wt.%, the interfacial tension of Daqing crude oil/connate water can also be reduced to an ultralow value. Therefore DLBS is a good hydrophobic surfactant applicable in ASP flooding with either NaOH or Na2CO3as alkaline agents. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12564
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 48, N° 5 (09-10/2011) . - p. 409-414[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13302 - Périodique Bibliothèque principale Documentaires Disponible Synthesis of ionic liquid-based amphiphilic polymer surfactant and its application in leather fatliquoring / Hao Dongyan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 2 (03-04/2023)
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Titre : Synthesis of ionic liquid-based amphiphilic polymer surfactant and its application in leather fatliquoring Type de document : texte imprimé Auteurs : Hao Dongyan, Auteur ; Xing Zhu, Auteur ; Hao Dongyu, Auteur ; Chao Wei, Auteur ; Hu Yujie, Auteur ; Wang Xuechuan, Auteur Année de publication : 2023 Article en page(s) : p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuirs et peaux -- Propriétés physiques
Cuirs et peaux de moutons
Douceur (toucher)
Emulsions
Granulométrie
Liquides ioniques
Polymères -- Synthèse
Polymères amphiphiles
Surfactants -- Synthèse
Wet-white (tannage)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In view of the environmental pollution caused by chrome tanning in current tanning processes, the development of chrome-free ecological leather manufacturing technology is an important direction for the development of the leather industry. However, the strong negative charge of chrome-free tanned leather leads to the reduction of binding sites of most anionic dyeing and finishing materials, resulting in colour fading and poor handle of the finished leather. Therefore, this paper mainly uses Nvinylimidazole, bromodecan and dimethylaminoethyl acrylate as raw materials to synthesise a ionic liquid-based amphiphilic polymer surfactant through free radical polymerisation and quaternisation and then, uses it in the fatliquoring process of a chrome-free non-metallic tanned green leather. The structure and morphology of the fatliquored wet-white leather were studied by SEM and the ultra depth of a field microscope, and the softness and physical and mechanical properties of the fatliquored leather were tested. The results showed that the collagen fibres were loosely distributed and the gap between the collagen fibres was larger after fatliquoring,and the softness and physical and mechanical properties of the fatliquored leather were improved. Note de contenu : - EXPERIMENTAL SECTION : Materials - Methods - Characterisation
- RESULTS AND DISCUSSION : FTIR analysis - 1H-NMR analysis - Surface tension - Emulsion particle size test - Physical property testing of crust leather - SEM observations - Ultra depth of field microscope
- Table 1 : Fatliquoring process for sheep wet-white leather tanned by F-90
- Table 2 : Test results of physical properties of crust leatherEn ligne : https://drive.google.com/file/d/1lHYlywraBbreP7FKgn902_KBzii8LmAB/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39065
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 107, N° 2 (03-04/2023) . - p.[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24024 - Périodique Bibliothèque principale Documentaires Disponible