Documents disponibles écrits par cet auteur

Direct growth of aligned carbon nanotubes on quartz fibers for structural epoxy composites / Lei Jin in Industrial & engineering chemistry research, Vol. 51 N° 13 (Avril 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 4927–4933 Titre : Direct growth of aligned carbon nanotubes on quartz fibers for structural epoxy composites Type de document : texte imprimé Auteurs : Lei Jin, Auteur ; Ling Zhang, Auteur ; Danhua Su, Auteur Année de publication : 2012 Article en page(s) : pp. 4927–4933 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Carbon  Nanotubes  Quartz  fiber Résumé : We developed an approach to prepare the multilayered 3D composites where aligned multiwalled carbon nanotubes (MWCNTs) were grown on the surface of quartz fiber cloths (QFCs) by chemical vapor deposition method. The morphologies of the MWCNTs-QFCs preforms were analyzed by field emission scanning electron microscopy, transmission electron microscopy, and thermogravimetric analysis. The results showed that the growth of high yield and uniform alignment of MWCNTs on the surface of QFCs could be controlled by the process. The unique MWCNTs-QFCs preforms, when served as connecting bridges for structural epoxy composites, demonstrated a significant enhancement of the interlaminar shear strength and electrical conductivity along in-plane and out-of-plane directions when compared to QFCs/epoxy composites without MWCNTs, making the MWCNTs-QFCs reinforcements meaningful in structural composites. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202306v [article] Direct growth of aligned carbon nanotubes on quartz fibers for structural epoxy composites [texte imprimé] / Lei Jin, Auteur ; Ling Zhang, Auteur ; Danhua Su, Auteur . - 2012 . - pp. 4927–4933. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 4927–4933 Mots-clés : Carbon  Nanotubes  Quartz  fiber Résumé : We developed an approach to prepare the multilayered 3D composites where aligned multiwalled carbon nanotubes (MWCNTs) were grown on the surface of quartz fiber cloths (QFCs) by chemical vapor deposition method. The morphologies of the MWCNTs-QFCs preforms were analyzed by field emission scanning electron microscopy, transmission electron microscopy, and thermogravimetric analysis. The results showed that the growth of high yield and uniform alignment of MWCNTs on the surface of QFCs could be controlled by the process. The unique MWCNTs-QFCs preforms, when served as connecting bridges for structural epoxy composites, demonstrated a significant enhancement of the interlaminar shear strength and electrical conductivity along in-plane and out-of-plane directions when compared to QFCs/epoxy composites without MWCNTs, making the MWCNTs-QFCs reinforcements meaningful in structural composites. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202306v

Production of flexible and electrically conductive polyethylene – carbon nanotube shish - kebab structures and their assembly into thin films / Tao Tao in Industrial & engineering chemistry research, Vol. 51 N° 15 (Avril 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 15 (Avril 2012) . - pp. 5456-5460 Titre : Production of flexible and electrically conductive polyethylene – carbon nanotube shish - kebab structures and their assembly into thin films Type de document : texte imprimé Auteurs : Tao Tao, Auteur ; Ling Zhang, Auteur ; Jan Ma, Auteur Année de publication : 2012 Article en page(s) : pp. 5456-5460 Note générale : Industry chemistry Langues : Anglais (eng) Mots-clés : Thin  film  Production Résumé : Polyethylene-multiwalled carbon nanotube shish-kebab (PE/MWCNT SK) structures with a large aspect ratio were synthesized by solvothermal growth followed by recrystallization. The effects of different crystallization temperatures (95, 105, and 115 °C) on the polymer were investigated, and the diameter of the PE crystal lamellae on the nanotubes was found to decrease with increasing crystallization temperature. Moreover, isothermal recrystallization of the SK structure at 115 °C produced crystal lamellae that were uniform in diameter, with dimensions that could be controlled by the recrystallization time. We studied also the stretchable electrical properties of uniform PE/MWCNT SK structures films on elastomer substrates under different strains. The electrical resistance of an SK/elastomer film was found to increase more slowly, compared to that of a film without the SK configuration, where an abrupt transition at a critical point was observed. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25815823 [article] Production of flexible and electrically conductive polyethylene – carbon nanotube shish - kebab structures and their assembly into thin films [texte imprimé] / Tao Tao, Auteur ; Ling Zhang, Auteur ; Jan Ma, Auteur . - 2012 . - pp. 5456-5460. Industry chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 15 (Avril 2012) . - pp. 5456-5460 Mots-clés : Thin  film  Production Résumé : Polyethylene-multiwalled carbon nanotube shish-kebab (PE/MWCNT SK) structures with a large aspect ratio were synthesized by solvothermal growth followed by recrystallization. The effects of different crystallization temperatures (95, 105, and 115 °C) on the polymer were investigated, and the diameter of the PE crystal lamellae on the nanotubes was found to decrease with increasing crystallization temperature. Moreover, isothermal recrystallization of the SK structure at 115 °C produced crystal lamellae that were uniform in diameter, with dimensions that could be controlled by the recrystallization time. We studied also the stretchable electrical properties of uniform PE/MWCNT SK structures films on elastomer substrates under different strains. The electrical resistance of an SK/elastomer film was found to increase more slowly, compared to that of a film without the SK configuration, where an abrupt transition at a critical point was observed. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25815823

Self-cleaning films with high transparency based on tiO2 nanoparticles synthesized via flame combustion / Huiting Wang in Industrial & engineering chemistry research, Vol. 49 N° 8 (Avril 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 8 (Avril 2010) . - pp. 3654–3662 Titre : Self-cleaning films with high transparency based on tiO2 nanoparticles synthesized via flame combustion Type de document : texte imprimé Auteurs : Huiting Wang, Auteur ; Yanjie Hu, Auteur ; Ling Zhang, Auteur Année de publication : 2010 Article en page(s) : pp. 3654–3662 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Self-Cleaning  Films  with  High  Transparency  Nanoparticles  Synthesized  Flame  Combustion Résumé : Self-cleaning transparent nanoporous films with high photocatalytic properties were obtained based on the self-assembly of TiO2 nanoparticles synthesized by H2/O2 combustion flames. Films were prepared from multilayer deposition of poly(sodium 4-styrenesulfonate)-treated TiO2 nanoparticles and SiO2 nanoparticles with electrostatic interaction by the adsorption of positively charged poly(diallyldimethylammonium chloride) via layer-by-layer assembly processes. The assembly conditions, such as the pH and concentration of a nanoparticle suspension that cause variation of the surface charge densities, were found to strongly affect the thickness and morphology of multilayer films. TiO2/SiO2 coatings assembled with 10 cycles reach effective photocatalysis with a maximum transmittance of 99.3% as well as a water droplet spreading time as short as 0.29 s. The photodegradation kinetics showed that multilayer films fabricated with 10 cycles are 4 times more active than films assembled with 5 cycles, indicating that flame-synthesized TiO2 with well crystallinity can be used to fabricate high transparent self-cleaning films at suitable assembly conditions. The photocatalytic degradation kinetics dominated by control of the number of assembled cycles was also discussed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901782w [article] Self-cleaning films with high transparency based on tiO2 nanoparticles synthesized via flame combustion [texte imprimé] / Huiting Wang, Auteur ; Yanjie Hu, Auteur ; Ling Zhang, Auteur . - 2010 . - pp. 3654–3662. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 8 (Avril 2010) . - pp. 3654–3662 Mots-clés : Self-Cleaning  Films  with  High  Transparency  Nanoparticles  Synthesized  Flame  Combustion Résumé : Self-cleaning transparent nanoporous films with high photocatalytic properties were obtained based on the self-assembly of TiO2 nanoparticles synthesized by H2/O2 combustion flames. Films were prepared from multilayer deposition of poly(sodium 4-styrenesulfonate)-treated TiO2 nanoparticles and SiO2 nanoparticles with electrostatic interaction by the adsorption of positively charged poly(diallyldimethylammonium chloride) via layer-by-layer assembly processes. The assembly conditions, such as the pH and concentration of a nanoparticle suspension that cause variation of the surface charge densities, were found to strongly affect the thickness and morphology of multilayer films. TiO2/SiO2 coatings assembled with 10 cycles reach effective photocatalysis with a maximum transmittance of 99.3% as well as a water droplet spreading time as short as 0.29 s. The photodegradation kinetics showed that multilayer films fabricated with 10 cycles are 4 times more active than films assembled with 5 cycles, indicating that flame-synthesized TiO2 with well crystallinity can be used to fabricate high transparent self-cleaning films at suitable assembly conditions. The photocatalytic degradation kinetics dominated by control of the number of assembled cycles was also discussed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901782w