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Preparation and characterization of silanized TiO2 nanoparticles and their application in toner / Weishuang Ni in Industrial & engineering chemistry research, Vol. 51 N° 40 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13157-13163 Titre : Preparation and characterization of silanized TiO2 nanoparticles and their application in toner Type de document : texte imprimé Auteurs : Weishuang Ni, Auteur ; Songping Wu, Auteur ; Qun Ren, Auteur Année de publication : 2012 Article en page(s) : pp. 13157-13163 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Nanoparticle  Titanium  oxide  Preparation Résumé : Surface modification of TiO2 nanoparticles with 3-methacrylic acyloxy propyl trimethoxysilane (KH570) was carried out in the liquid phase. The modified TiO2 nanoparticles, as charge control agents (CCAs), were added to toner. Infrared and X-ray photoelectron spectroscopies provided strong indications of the formation of organic links between the TiO2 and the KH570. The thick coating layer of KH570 deposited on the surface of TiO2 nanoparticles was determined to be about 2―5 nm by transmission electron microscopy. The hydrophobicity of the modified toner decreased when the amount of coated KH570 reached 5.28 wt % and then increased with further increasing amount of coated KH570. The charge-to-mass ratio (Q/M) of the modified toner shifted in the negative direction with increasing amount of coated KH570; however, with increasing amount of modified TiO2, the value of Q/M shifted in the positive direction. The reason for this difference is that the OH groups existing on the surface of TiO2 transferred from the toner to the carrier after friction. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451465 [article] Preparation and characterization of silanized TiO2 nanoparticles and their application in toner [texte imprimé] / Weishuang Ni, Auteur ; Songping Wu, Auteur ; Qun Ren, Auteur . - 2012 . - pp. 13157-13163. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13157-13163 Mots-clés : Nanoparticle  Titanium  oxide  Preparation Résumé : Surface modification of TiO2 nanoparticles with 3-methacrylic acyloxy propyl trimethoxysilane (KH570) was carried out in the liquid phase. The modified TiO2 nanoparticles, as charge control agents (CCAs), were added to toner. Infrared and X-ray photoelectron spectroscopies provided strong indications of the formation of organic links between the TiO2 and the KH570. The thick coating layer of KH570 deposited on the surface of TiO2 nanoparticles was determined to be about 2―5 nm by transmission electron microscopy. The hydrophobicity of the modified toner decreased when the amount of coated KH570 reached 5.28 wt % and then increased with further increasing amount of coated KH570. The charge-to-mass ratio (Q/M) of the modified toner shifted in the negative direction with increasing amount of coated KH570; however, with increasing amount of modified TiO2, the value of Q/M shifted in the positive direction. The reason for this difference is that the OH groups existing on the surface of TiO2 transferred from the toner to the carrier after friction. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451465