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Carboxymethyl Tamarind-g-poly(acrylamide)/Silica / Sagar Pal in Industrial & engineering chemistry research, Vol. 51 N° 48 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15546–15556 Titre : Carboxymethyl Tamarind-g-poly(acrylamide)/Silica : A high performance hybrid nanocomposite for adsorption of methylene blue dye Type de document : texte imprimé Auteurs : Sagar Pal, Auteur ; S. Ghorai, Auteur ; S. Samrat, Auteur Année de publication : 2013 Article en page(s) : pp. 15546–15556 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Carboxymethyl  Adsorption Résumé : Here, synthesis of an efficient nanocomposite based on a polyacrylamide grafted carboxymethyl tamarind (CMT-g-PAM) and a SiO2 nanoparticle is presented. The synthesized nanocomposites are characterized using FT-IR, SEM, TEM, 13C NMR, elemental analysis, viscosity, rheological measurement, and molecular weight determination. Various characterizations reveal the existence of an excellent polymer matrix–nanoparticle interaction, which is at a maximum when 1.5 wt % of SiO2 is introduced in the polymer matrix (i.e., CMT-g-PAM/SiO2-3). Nanocomposites show tremendous methylene blue (MB) dye adsorption capacity, because of their higher hydrodynamic radius as well as hydrodynamic volume, which originates from proper polymer matrix–SiO2 nanoparticle interaction. CMT-g-PAM/SiO2-3 exhibited a maximum adsorption capacity (Qmax) of 43.859 mg·g–1. The adsorption behavior of the nanocomposite shows that adsorption kinetics and isotherms are in good agreement with pseudo-second-order and Langmuir equations, respectively. Negative values of ΔG° confirmed the spontaneous nature of adsorption. Further, desorption experiments affirmed that the developed nanocomposite has excellent regenerative efficacy. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie301134a [article] Carboxymethyl Tamarind-g-poly(acrylamide)/Silica : A high performance hybrid nanocomposite for adsorption of methylene blue dye [texte imprimé] / Sagar Pal, Auteur ; S. Ghorai, Auteur ; S. Samrat, Auteur . - 2013 . - pp. 15546–15556. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15546–15556 Mots-clés : Carboxymethyl  Adsorption Résumé : Here, synthesis of an efficient nanocomposite based on a polyacrylamide grafted carboxymethyl tamarind (CMT-g-PAM) and a SiO2 nanoparticle is presented. The synthesized nanocomposites are characterized using FT-IR, SEM, TEM, 13C NMR, elemental analysis, viscosity, rheological measurement, and molecular weight determination. Various characterizations reveal the existence of an excellent polymer matrix–nanoparticle interaction, which is at a maximum when 1.5 wt % of SiO2 is introduced in the polymer matrix (i.e., CMT-g-PAM/SiO2-3). Nanocomposites show tremendous methylene blue (MB) dye adsorption capacity, because of their higher hydrodynamic radius as well as hydrodynamic volume, which originates from proper polymer matrix–SiO2 nanoparticle interaction. CMT-g-PAM/SiO2-3 exhibited a maximum adsorption capacity (Qmax) of 43.859 mg·g–1. The adsorption behavior of the nanocomposite shows that adsorption kinetics and isotherms are in good agreement with pseudo-second-order and Langmuir equations, respectively. Negative values of ΔG° confirmed the spontaneous nature of adsorption. Further, desorption experiments affirmed that the developed nanocomposite has excellent regenerative efficacy. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie301134a