Publicação

Application of ftir in the determination of acrylate content in poly(sodium acrylate-co-acrylamide) superabsorbent hydrogels

Ver documento

Detalhes bibliográficos
Resumo:Hydrogels have been prepared by free-radical solution copolymerization of acrylamide and sodium acrylate (NaAc), with molar ratio ranging from 25/75 to 80/20, respectively, using methylene bisacrylamide as the crosslinking agent. A FTIR spectroscopy procedure to determine the acrylate/acrylamide ratio in these hydrogels was proposed based on absorbance at 1410 cm-1 (nCOO-) and 2940 cm-1 (nCH and nCH2). A straight line with a good linear correlation coefficient (0.998) was obtained by plotting the acrylate content (Ac%) versus relative absorbance (Arel = A1410/A2940). Results were confirmed by the amount of sodium cation released in acid medium determined by atomic absorption spectrometry.
Autores principais:Magalhães,Antônio Sávio G.
Outros Autores:Almeida Neto,Manuel P.; Bezerra,Maslândia N.; Ricardo,Nágila M. P. S.; Feitosa,Judith P. A.
Assunto:hydrogel sodium acrylate FTIR
Ano:2012
País:Brasil
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:IBICT
Idioma:inglês
Origem:Oasisbr

Registos relacionados

Atividades financiadas

Não foram encontrados projetos financiados.

Registos relacionados