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dc.contributor.authorGabbay Alves, Tais Vanessa-
dc.contributor.authorMadureira Tavares, Eraldo Jose-
dc.contributor.authorAouada, Fauze Ahmad-
dc.contributor.authorBrito Negrao, Charles Alberto-
dc.contributor.authorChaves Oliveira, Marcos Ene-
dc.contributor.authorDuarte Junior, Anivaldo Pereira-
dc.contributor.authorFerreira da Costa, Carlos Emmerson-
dc.contributor.authorCarrera Silva Junior, Jose Otavio-
dc.contributor.authorRibeiro Costa, Roseane Maria-
dc.identifier.citationJournal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 106, n. 3, p. 717-724, 2011.-
dc.description.abstractThis paper reports the thermal characterization of polyacrylamide-co-methylcellulose hydrogels and the constituent monomers (acrylamide and methylcellulose). Polymeric materials can be used to produce hydrogels, which can be natural, synthetic, or a mixture. The hydrogels described here were obtained by free radical polymerization, in the presence of N,N'-methylene-bis-acrylamide as a cross-linker agent. Four acrylamide concentrations were used for the synthesis of hydrogels: 3.6, 7.2, 14.7, and 21.7% (w/v). The materials so obtained were analyzed by TG, DTG, DSC, and FT-IR. The TG curves of acrylamide and methylcellulose showed three mass loss events. In DSC curves, the acrylamide exhibited one melting peak at 84.5 A degrees C, and methylcellulose indicated one exothermic event. Nevertheless, acrylamide was considered more stable than methylcellulose. The TG curves of the hydrogels exhibited three mass loss events, and on the DSC curves, three endothermic events were observed. It was verified that the different acrylamide proportions influenced the thermic behavior of hydrogels, and that the authors considered the 7.2% hydrogel a promising drug carrier system. The absorption bands were well defined, confirming the presence of the functional groups in the samples.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
dc.description.sponsorshipEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
dc.sourceWeb of Science-
dc.subjectThermal analysisen
dc.titleThermal analysis characterization of PAAm-co-MC hydrogelsen
dc.contributor.institutionFed Univ Para-
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationFed Univ Para, Fac Chem Engn, BR-66075110 Belem, PA, Brazil-
dc.description.affiliationEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Eastern Amazon, Lab Agrobusiness, BR-66009510 Belem, PA, Brazil-
dc.description.affiliationSão Paulo State Univ, Inst Chem, BR-14801907 Araraquara, SP, Brazil-
dc.description.affiliationUnespSão Paulo State Univ, Inst Chem, BR-14801907 Araraquara, SP, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Thermal Analysis and Calorimetry-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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