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Constructing robust and magnetic PU sponges modified with Fe3O4/GO nanohybrids for efficient oil/water separation / Dongdong Ge in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)
[article]
Titre : Constructing robust and magnetic PU sponges modified with Fe3O4/GO nanohybrids for efficient oil/water separation Type de document : texte imprimé Auteurs : Dongdong Ge, Auteur ; Yun Zhang, Auteur ; Zhenshan Cui, Auteur ; Guilong Wang, Auteur ; Jun Liu, Auteur ; Xiaomeng Lv, Auteur Année de publication : 2023 Article en page(s) : p. 661-670 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Absorbants et adsorbants
Caractérisation
Eponges
Hydrophobie
Matériaux magnétiques
Nanoparticules
Oxyde de fer
Oxyde de graphène
Polyuréthanes
RugositéIndex. décimale : 667.9 Revêtements et enduits Résumé : Metal oxides, due to their low cost, environmental friendliness and wide sources, have attracted great attention. We chose iron oxide/graphene oxide (Fe3O4/GO) nanohybrids to modify a PU sponge to increase the surface roughness of the sponge without damaging its inherent structural properties. The composite was then treated with octadecane thiol to reduce the surface energy and produce a superhydrophobic and oleophilic absorption material with a water contact angle of 157°. From the absorption experiment with simulated oily water (including diesel oil, lubricating oil, rapeseed oil, chloroform, N,N-dimethyl formamide, tetrahydrofuran, ethanol and acetone), it was found that the Fe3O4/GO-modified PU sponge could absorb up to 80–170 times its own weight while showing outstanding recyclability achieved by squeeze/absorption cycles. Moreover, the composite absorption material exhibited weak magnetic properties, suggesting its recycling practicability. These results provide a quick and simple strategy to deal with oil spills and chemical leakage. Note de contenu : - EXPERIMENTAL SECTION : Preparation of Fe3O4/GO nanohybrids - Synthesis of the M-PU sponge
- RESULTS AND DISCUSSION : Processing of the PU sponge - Characterization of the Fe3O4/GO nanohybrids - Morphology and wettability of the M-PU sponge - Application of the M-PU sponge as an absorbent
- Table 1 : The magnetism values of the Fe3O4/GO nanohybrids (a); M-PU sponge (b)DOI : https://doi.org/10.1007/s11998-022-00699-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00699-7.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39310
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 2 (03/2023) . - p. 661-670[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24056 - Périodique Bibliothèque principale Documentaires Disponible Preparation of biobased sponges from up-tanned hides / Aisha Siddique in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 5 (05/2016)
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Titre : Preparation of biobased sponges from up-tanned hides Type de document : texte imprimé Auteurs : Aisha Siddique, Auteur ; Nicholas P. Latona, Auteur ; Maryann M. Taylor, Auteur ; Cheng-Kung Liu, Auteur Année de publication : 2016 Article en page(s) : p. 192-199 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse mécanique dynamique
Cuirs et peaux -- Emploi en thérapeutique
Eponges
Humidité -- Absorption:Eau -- Absorption
Poids moléculaires
TannageIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : One of our research endeavors to address ongoing challenges faced by the U.S. hide and leather industries is to develop innovative uses and novel biobased products from hides to improve prospective markets and to secure a viable future for hides and leather industries. We had previously investigated the production of nonwoven, green composites, and films from collagen fiber networks, which were extracted from un-tanned hides and from tannery solid wastes, such as splits or trimmings. Recently, we investigated the preparation of biobased sponges from un-tanned, specifically limed hides, which have potential commercial applications in medical care. We also investigated the effects of processing steps such as bating and alkaline treatments using sodium hydroxide (NaOH) on the morphology and viscoelasticity of resultant sponges from un-tanned hides. Results showed that the treatments of fiber networks have significant effects on the properties of resultant sponges. The dynamic mechanical analysis showed alkaline treatments yielded stiffer sponges than limed and bated samples. SDS-PAGE analysis showed the molecular weights of sponges were maintained in the range as those of commercial collagen samples. Lastly the resultant sponges are in the desirable apparent density range for a potential application as a medical sponge. Note de contenu : - EXPERIMENTAL : Materials and procedures - Dynamic mechanical analysis - Molecular weight distribution - Microscopic observations - Water absorption capacity
- RESULTS AND DISCUSSION : Water absorption capacity - Dynamic mechanical behaviorEn ligne : https://drive.google.com/file/d/1JZ_hLIKPyQWLLkifRJ9NdQJduTlI5YhD/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26223
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXI, N° 5 (05/2016) . - p. 192-199[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18051 - Périodique Bibliothèque principale Documentaires Disponible