Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/328550
Type: Artigo
Title: Toward A Delaminated Organotalc: The Use Of Polyamidoamine Dendrons
Author: Andrade
Marcos A. S.
Jr.; Pastore
Heloise O.
Abstract: A sequence of generations of the polyamideamine dendron, PAMAM-talc-Gn (n = 1-7), was constructed on the surfaces of ethylenediaminepropyl-functionalized magnesium phyllosilicate lamellas by using a modified microwave-assisted synthesis. The successful functionalization of the inorganic layers by the organic dendrimer was confirmed by FTIR and C-13 NMR spectroscopies, elemental analyses, and thermogravimetric analysis (TGA). The solid materials presented an increase in their interlamellar space and disorganization of lamella packing with the growth of the dendrons. Thermal-programmed desorption analysis showed that the lower dendron generation, PAMAM-talc-G1, adsorbed 1.30 mmol of CO2/g of sorbent at 30 degrees C. PAMAM-talc-G5 adsorbed the double of PAMAM-talc-G3, probably due to the higher amount of the primary amine group; however, PAMAM-talc-G5 adsorbed more CO2 than PAMAM-talc-G7 probably because in the delaminated seventh generation intradendron N-H interactions were more prevalent than in the fifth generation and blocked CO2 interaction sites.
Subject: Organotalc
Dendrimer
Pamam
Delamination
Co2 Adsorption
Editor: Amer Chemical Soc
Washington
Rights: fechado
Identifier DOI: 10.1021/acsami.5b09963
Address: http://pubs.acs.org/doi/abs/10.1021/acsami.5b09963
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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