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Photoresist derived electrospun carbon nanofibers with tunable morphology and surface properties / Chandra S. Sharma in Industrial & engineering chemistry research, Vol. 49 N° 6 (Mars 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 6 (Mars 2010) . - pp.2731–2739 Titre : Photoresist derived electrospun carbon nanofibers with tunable morphology and surface properties Type de document : texte imprimé Auteurs : Chandra S. Sharma, Auteur ; Rajesh Vasita, Auteur ; Devendra K. Upadhyay, Auteur Année de publication : 2010 Article en page(s) : pp.2731–2739 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Photoresist;  Derived;  Electrospun;  Carbon;  Nanofibers;  Tunable;  Morphology;  Surface;  Properties; Résumé : A new precursor, SU-8, which is a negative photoresist, was electrospun to produce ultrafine polymeric fibers with a wide range of morphology and wettability characteristics. Electrospun nanofibers of SU-8 were pyrolyzed at 1173 K in an inert atmosphere to give carbon nanofibers. A set of parameters, including electric potential, distance between source and collector, polymer flow rate, and polymer concentration, was optimized for high-viscosity SU-8 photoresist to synthesize long continuous carbon fibers having diameters in the range of 120−600 nm. However, for the same conditions, medium- and lower-viscosity SU-8 yielded beaded fibers and isolated beads, respectively. The wettability of the carbon web was significantly influenced by its surface morphology, as shown by water contact angle measurements. These SU-8-derived carbon nanostructures with tunable surface properties and morphologies could be especially suitable for integration with photoresist-based carbon-MEMS to produce multiscale hierarchal assemblies and could be of potential use in a broad range of applications. Note de contenu : Bibiogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901312j [article] Photoresist derived electrospun carbon nanofibers with tunable morphology and surface properties [texte imprimé] / Chandra S. Sharma, Auteur ; Rajesh Vasita, Auteur ; Devendra K. Upadhyay, Auteur . - 2010 . - pp.2731–2739. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 6 (Mars 2010) . - pp.2731–2739 Mots-clés : Photoresist;  Derived;  Electrospun;  Carbon;  Nanofibers;  Tunable;  Morphology;  Surface;  Properties; Résumé : A new precursor, SU-8, which is a negative photoresist, was electrospun to produce ultrafine polymeric fibers with a wide range of morphology and wettability characteristics. Electrospun nanofibers of SU-8 were pyrolyzed at 1173 K in an inert atmosphere to give carbon nanofibers. A set of parameters, including electric potential, distance between source and collector, polymer flow rate, and polymer concentration, was optimized for high-viscosity SU-8 photoresist to synthesize long continuous carbon fibers having diameters in the range of 120−600 nm. However, for the same conditions, medium- and lower-viscosity SU-8 yielded beaded fibers and isolated beads, respectively. The wettability of the carbon web was significantly influenced by its surface morphology, as shown by water contact angle measurements. These SU-8-derived carbon nanostructures with tunable surface properties and morphologies could be especially suitable for integration with photoresist-based carbon-MEMS to produce multiscale hierarchal assemblies and could be of potential use in a broad range of applications. Note de contenu : Bibiogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901312j