Thermal analysis characterization of PAAm-co-MC hydrogels
dc.contributor.author | Gabbay Alves, Tais Vanessa | |
dc.contributor.author | Madureira Tavares, Eraldo Jose | |
dc.contributor.author | Aouada, Fauze Ahmad [UNESP] | |
dc.contributor.author | Brito Negrao, Charles Alberto | |
dc.contributor.author | Chaves Oliveira, Marcos Ene [UNESP] | |
dc.contributor.author | Duarte Junior, Anivaldo Pereira | |
dc.contributor.author | Ferreira da Costa, Carlos Emmerson | |
dc.contributor.author | Carrera Silva Junior, Jose Otavio | |
dc.contributor.author | Ribeiro Costa, Roseane Maria | |
dc.contributor.institution | Fed Univ Para | |
dc.contributor.institution | Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2014-05-20T13:29:52Z | |
dc.date.available | 2014-05-20T13:29:52Z | |
dc.date.issued | 2011-12-01 | |
dc.description.abstract | This 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.affiliation | Fed Univ Para, Fac Chem Engn, BR-66075110 Belem, PA, Brazil | |
dc.description.affiliation | Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Eastern Amazon, Lab Agrobusiness, BR-66009510 Belem, PA, Brazil | |
dc.description.affiliation | São Paulo State Univ, Inst Chem, BR-14801907 Araraquara, SP, Brazil | |
dc.description.affiliationUnesp | São Paulo State Univ, Inst Chem, BR-14801907 Araraquara, SP, Brazil | |
dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
dc.description.sponsorship | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) | |
dc.description.sponsorship | Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) | |
dc.format.extent | 717-724 | |
dc.identifier | http://dx.doi.org/10.1007/s10973-011-1572-z | |
dc.identifier.citation | Journal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 106, n. 3, p. 717-724, 2011. | |
dc.identifier.doi | 10.1007/s10973-011-1572-z | |
dc.identifier.issn | 1388-6150 | |
dc.identifier.lattes | 8251270609012225 | |
dc.identifier.orcid | 0000-0002-6870-6961 | |
dc.identifier.uri | http://hdl.handle.net/11449/10131 | |
dc.identifier.wos | WOS:000297371200013 | |
dc.language.iso | eng | |
dc.publisher | Springer | |
dc.relation.ispartof | Journal of Thermal Analysis and Calorimetry | |
dc.relation.ispartofjcr | 2.209 | |
dc.relation.ispartofsjr | 0,587 | |
dc.rights.accessRights | Acesso restrito | |
dc.source | Web of Science | |
dc.subject | Hydrogels | en |
dc.subject | Polymers | en |
dc.subject | Thermal analysis | en |
dc.subject | PAAm-co-MC | en |
dc.title | Thermal analysis characterization of PAAm-co-MC hydrogels | en |
dc.type | Artigo | |
dcterms.license | http://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0 | |
dcterms.rightsHolder | Springer | |
dspace.entity.type | Publication | |
unesp.author.lattes | 8251270609012225[3] | |
unesp.author.orcid | 0000-0002-6870-6961[3] | |
unesp.campus | Universidade Estadual Paulista (UNESP), Faculdade de Engenharia, Ilha Solteira | pt |
unesp.department | Física e Química - FEIS | pt |
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