2017
DOI: 10.1590/s1517-707620170001.0108
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Caracterização no Infravermelho (IV) e Eletrônica de superfície (MEV) de membranas assimétricas à base de Poli (acrilonitrila-co-acetato de vinila)

Abstract: RESUMO As membranas assimétricas, denominadas respectivamente Mb1 e Mb2, foram obtidas por meio do método de inversão de fases, empregando-se o copolímero Poli (acrilonitrila-co-acetato de vinila) - P (AN- co -AV) com composição em massa inicial de 6,5% e 8,5% de Polivinilpirrolidona (PVP). As membranas foram caracterizadas por meio das técnicas de Espectroscopia no Infravermelho com Transformada de Fourier (IV-TF) e de Microscopia Eletrônica de Varredura (MEV). Por meio da técnica de IV-TF foi possível identi… Show more

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“…Figure 6 indicates that the PDMS did not present swelling, which coincides with its hydrophobic character; PDMS is an organic polymer, which is impermeable to water but soluble in nonpolar organic solvents [ 26 ]. On the other hand, the [PDMS-g-AAc] graft showed swelling (approximately 3%) due to the hydrophilic character given by the AAc, a characteristic given by its molecular structure that has a carboxyl group.…”
Section: Resultsmentioning
confidence: 99%
“…Figure 6 indicates that the PDMS did not present swelling, which coincides with its hydrophobic character; PDMS is an organic polymer, which is impermeable to water but soluble in nonpolar organic solvents [ 26 ]. On the other hand, the [PDMS-g-AAc] graft showed swelling (approximately 3%) due to the hydrophilic character given by the AAc, a characteristic given by its molecular structure that has a carboxyl group.…”
Section: Resultsmentioning
confidence: 99%