Artigo 27 – Vol. 7 N. 1


Thermal and morphological study of poly(acrylamide-co-diallyldimethylammonium chloride)/nanoclay composite films

Autores
Maria Eduarda E. Cosendey, Mariana P. Figueiredo, Ana L. Shiguihara, Vera R. L. Constantino, Jorge Amim Júnior
Recebido em
 21 de Fevereiro de 2018
Aceito em
 01 de Março de 2018
Publicado em
 15 de Março de 2018
DOI
 10.18362/bjta.v7.i1.27
Páginas
Keywords
nanoclay, PAADDA, composite film

 

Resumo

Poly(acrylamide-co-diallyldimethylammonium chloride) (PAADDA) /nanoclay composite films with different nanoclay (NC) contents (3, 5 and 7 wt%) were obtained by solvent casting method. Composite films were characterized by means of infrared vibrational spectroscopy with Fourier transform (FTIR), X-ray diffraction (XRD), thermogravimetric analysis coupled with mass spectrometry (TGA-MS) and scanning electron microscopy (SEM). FTIR spectra of PAADDA/NC composites showed that the NC particles were incorporated into the PAADDA matrix. PAADDA/NC composites exhibited microcomposite structure as observed by XRD. TGA-MS curves revealed an increase in the thermal stability of PAADDA in the presence of NC particles. The gaseous products obtained from the thermal degradation of pristine PAADDA and PAADDA/NC composites were H2O (m/z = 18), NO (m/z = 30) and CO2 (m/z = 44). The surface morphology of the PAADDA/NC composite films are rougher than pristine PAADDA film.
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