Ordered ferrocene-containing mesoporous materials with tailor-made pore size / T. Zhang in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 47, N° 5/2010 (09-10/2010)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 47, N° 5/2010 (09-10/2010) . - p. 325-329 Titre : Ordered ferrocene-containing mesoporous materials with tailor-made pore size Type de document : texte imprimé Auteurs : T. Zhang, Auteur ; P. Gao, Auteur ; G. G. Gao, Auteur ; H. Yang, Auteur ; Y. Zhao, Auteur Année de publication : 2010 Article en page(s) : p. 325-329 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Surfactants Tags : Surfactants  Ferrocène  'Sur  mesure'  'Agent  de  gonflement' Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Ordered ferrocene-containing mesoporous hybrid materials were prepared by the use of quaternary ammonium surfactants CnH2n+1(CH3)3NBr and organic additives during the hydrothermal synthesis process. The characterization results showed all the materials exhibit an ordered two-dimensional hexagonal pore structure with pore diameter from 2.04 nm to 4.01 nm. It was found that the pore diameter of the materials is strongly dependent on the surfactant chain length and the content of the organic additives. The fourier transform infrared spectra revealed that the organic bridge is preserved during the hydrothermal synthesis and subsequent extraction procedure. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9969 [article]

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Preparation and anti-fouling property of acryloylmorpholine-grafted PVDF membrane : the effect of cross-linking agent / Xueye Shen in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 2 (05/2016)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXI, N° 2 (05/2016) . - p. 207-216 Titre : Preparation and anti-fouling property of acryloylmorpholine-grafted PVDF membrane : the effect of cross-linking agent Type de document : texte imprimé Auteurs : Xueye Shen, Auteur ; J. Liu, Auteur ; Y. Zhao, Auteur ; L. Chen, Auteur Année de publication : 2016 Article en page(s) : p. 207-216 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption Angle de contact Copolymères -- Synthèse Copolymères greffés Membranes (technologie) Perméation Polyacryloylmorpholine Polyfluorure de vinylidène Protéines Index. décimale : 668.4 Plastiques, vinyles Résumé : Inspired by the hydration capability of hydrogel materials, cross-linked poly(N-acryloylmorpholine) (PACMO) chains were designed into poly(vinylidene fluoride) (PVDF) backbones to synthesize the copolymers (PVDF-g-PACMO) using the radical polymerization method. These copolymers were then cast into the porous membranes via immersion phase inversion. The effects of N,N?-methylenebisacrylamide (MBAA) in the reaction solution on the structure and performance of as-prepared copolymer membranes were evaluated by elemental analysis, X-ray photoelectronic spectroscopy, field emission scanning electron microscopy, water contact angle measurement, protein adsorption and filtration experiment. The grafting degree of PACMO increases with the increase of MBAA amount in the reaction solution, which endows the copolymer membrane with a good hydrophilicity. The protein adsorption and irreversible membrane fouling decrease and then further increase with the elevated grafting degree of PACMO. This result indicates that the anti-fouling property of membrane not only depends on the surface hydrophilicity and but also associates with the grafting structures of PACMO. This work provides a fundamental understanding of various grafting structures governing the performance of anti-fouling properties. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of PVDF-g-PACMO copolymer - Preparation of PVDF-g-PACMO copolymer membrane - Membrane characterizations - Protein adsorption - Filtration experiments - RESULTS AND DISCUSSIONS : Chemical structure of PVDF-g-PACMO membrane - Morphology of PVDF-g-PACMO membrane - Hydrophilicity of PVDF-g-PACMO membrane - Protein adsorption - Permeation performance of PVDF-g-PACMO DOI : 10.3139/217.3150 En ligne : https://drive.google.com/file/d/12AXTiFWlhjB5Ks5rKSxDZOzcwVulLimE/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26178 [article]

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Synthesis and interfacial properties of dialkylbenzenesulfonates for producting low interfacial tensions / X.-Y. Wang in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 45, N° 1/2008 (01-02/2008)  

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 45, N° 1/2008 (01-02/2008) . - p. 25-29 Titre : Synthesis and interfacial properties of dialkylbenzenesulfonates for producting low interfacial tensions Type de document : texte imprimé Auteurs : X.-Y. Wang, Auteur ; Z.-S. Li ; J. Qi ; Q. Hou ; Y. Zhao, Auteur Année de publication : 2008 Article en page(s) : p. 25-29 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Benzène -- Dérivés Interfaces (Sciences physiques) Sulfonates Tension superficielle Index. décimale : 541.33 Chimie physique - Chimie des surfaces (Phénomènes superficiels) Résumé : A new method of synthesis a series of pure dialkylbenzene sulfonates is described. The benzene ring carries a major alkyl substituent, consisting of a linear chain of sixteen carbon atoms long, and one additional methyl group. Products are charactered by EI-MS and 1H NMR. Experimental investigations have been conducted to explore the interfacial tension behavior of crude oil with dialkylbenzenesulfonates. The effects of various parameters such as surfactant concentration, salinity concentration on the interfacial tension of crude oil-water were investigated in detail. The transient low interfacial tensions in crude oil/alkali system were caused by the synergistic effects between surfactant and the active species generated at interface, but surfactant molecules plays the dominant role at equilibrium. En ligne : https://drive.google.com/file/d/1ewhUc8gQTJL7znAyTlBSxCsSxurZX94Y/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3053 [article]

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