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Radiation-induced admicellar polymerization of isoprene on silica / Narissara Yooprasert in Chemical engineering journal, Vol. 156 N° 1 (Janvier 2010) 

Public ISBD [article]  in Chemical engineering journal > Vol. 156 N° 1 (Janvier 2010) . - pp. 193-199 Titre : Radiation-induced admicellar polymerization of isoprene on silica : effects of surfactant's chain length Type de document : texte imprimé Auteurs : Narissara Yooprasert, Auteur ; Thirawudh Pongprayoon, Auteur ; Phiriyatorn Suwanmala, Auteur Année de publication : 2010 Article en page(s) : pp. 193-199 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Modified  silica  Polyisoprene  Admicellar  polymerization  Gamma  radiation Index. décimale : 660 Résumé : This research compared radiation-induced admicellar polymerization with the traditional thermal process and studied the influence of the hydrocarbon chain length of different surfactants on film formation. Three types of surfactants were used in this study: dodecyl trimethyl ammonium bromide (DTAB), tetradecyl trimethyl ammonium bromide (TTAB) and cetyl trimethyl ammonium bromide (CTAB). Isoprene was used as a monomer for the formation of thin film inside the surfactant bilayers, called admicelle, adsorbed on silica surface. The results showed that an optimum dose can lead to a better film formation on silica, compared with the thermal method. However, when the dose was over the optimum value, the formation of polyisoprene film was diminished. The formation of polyisoprene film was found to depend not only on the hydrocarbon chain length of the surfactant, but also on the density of adsorbed surfactant on silica surface. DEWEY : 660 ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4XFY0NY-5&_user=6 [...] [article] Radiation-induced admicellar polymerization of isoprene on silica : effects of surfactant's chain length [texte imprimé] / Narissara Yooprasert, Auteur ; Thirawudh Pongprayoon, Auteur ; Phiriyatorn Suwanmala, Auteur . - 2010 . - pp. 193-199. Génie Chimique Langues : Anglais (eng) in Chemical engineering journal > Vol. 156 N° 1 (Janvier 2010) . - pp. 193-199 Mots-clés : Modified  silica  Polyisoprene  Admicellar  polymerization  Gamma  radiation Index. décimale : 660 Résumé : This research compared radiation-induced admicellar polymerization with the traditional thermal process and studied the influence of the hydrocarbon chain length of different surfactants on film formation. Three types of surfactants were used in this study: dodecyl trimethyl ammonium bromide (DTAB), tetradecyl trimethyl ammonium bromide (TTAB) and cetyl trimethyl ammonium bromide (CTAB). Isoprene was used as a monomer for the formation of thin film inside the surfactant bilayers, called admicelle, adsorbed on silica surface. The results showed that an optimum dose can lead to a better film formation on silica, compared with the thermal method. However, when the dose was over the optimum value, the formation of polyisoprene film was diminished. The formation of polyisoprene film was found to depend not only on the hydrocarbon chain length of the surfactant, but also on the density of adsorbed surfactant on silica surface. DEWEY : 660 ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4XFY0NY-5&_user=6 [...]