Documents disponibles écrits par cet auteur

Effect of organoclay reinforcement on lignin - based carbon fibers / W. Qin in Industrial & engineering chemistry research, Vol. 50 N° 22 (Novembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 22 (Novembre 2011) . - pp 12548–12555 Titre : Effect of organoclay reinforcement on lignin - based carbon fibers Type de document : texte imprimé Auteurs : W. Qin, Auteur ; J. F. Kadla, Auteur Année de publication : 2012 Article en page(s) : pp 12548–12555 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Carbon  fiber Résumé : Organoclay reinforced carbon fibers were prepared from pyrolytic lignin isolated from a commercial bio-oil. Organoclay reinforcement improved the tensile strength of the pyrolytic lignin based carbon fibers by 12% at clay loadings below 2 wt %. Wide-angle X-ray diffraction analysis of the composite as-spun fibers revealed the successful intercalation of the organoclays (Cloisite 20A and 30B), which helped develop a more ordered structure after carbonization. However, only the 1.0 wt % Cloisite 30B as-spun fibers showed an increase in Young's modulus, while all other as-spun fibers remained unchanged. By contrast, all of the carbon fibers showed a drop in young's modulus (by 16-38%) upon addition of organoclay, decreasing as organoclay content increased. This is likely due to the presence of microvoids in the carbon fiber as well as the lack of preferred orientation of clay platelets along the fiber axis. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24745729 [article] Effect of organoclay reinforcement on lignin - based carbon fibers [texte imprimé] / W. Qin, Auteur ; J. F. Kadla, Auteur . - 2012 . - pp 12548–12555. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 22 (Novembre 2011) . - pp 12548–12555 Mots-clés : Carbon  fiber Résumé : Organoclay reinforced carbon fibers were prepared from pyrolytic lignin isolated from a commercial bio-oil. Organoclay reinforcement improved the tensile strength of the pyrolytic lignin based carbon fibers by 12% at clay loadings below 2 wt %. Wide-angle X-ray diffraction analysis of the composite as-spun fibers revealed the successful intercalation of the organoclays (Cloisite 20A and 30B), which helped develop a more ordered structure after carbonization. However, only the 1.0 wt % Cloisite 30B as-spun fibers showed an increase in Young's modulus, while all other as-spun fibers remained unchanged. By contrast, all of the carbon fibers showed a drop in young's modulus (by 16-38%) upon addition of organoclay, decreasing as organoclay content increased. This is likely due to the presence of microvoids in the carbon fiber as well as the lack of preferred orientation of clay platelets along the fiber axis. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24745729