Morphological Comparison of PEI and PES Nanocomposite Membranes with Bentonite Clay

Abstract:

Obtaining membranes from polymer nanocomposites have attracted interest of researchers because they use low levels of charge for improvement in barrier properties. In this study, membranes from poly (imide ether) (PEI) and poly (sulfone ether) (PES) were produced by the solvent evaporation technique, using as solvent: chloroform to PEI and dimethylformamide (DMF) to PES; and the clay Brasgel PA was used as load. The results showed that, by XRD, PEI membranes have apparently a structure of micro-composites and / or interleaved structure. Those obtained with PES had an exfoliated structure and / or partially exfoliated one. However, for the composition of PES with 5% clay, there was a small shoulder, therefore demonstrating perhaps an intercalated structure and/or an exfoliated part. By SEM, it was observed that all the membranes are apparently dense, but the behavior is differentiated by changing the matrix of the membranes.

• Periodical: Materials Science Forum (Volumes 775-776)
• Pages: 487-492
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.775-776.487
• Online since: January 2014
• Authors: Vanessa da Nóbrega Medeiros, A.M.D. Leite, R.A. Paz, L.F. Maia, E.M. Araújo, L.A. Pessan
• Keywords: Membrane, Nanocomposite, Poly(Imide Ether), Poly(Sulfone Ether)

References

[1] S.S. Ray and M. Okamoto: Progress in Polymer Science. Vol. 28 (2003), p.1539.

[2] T.J. Pinnavaia and G.W. Beall: Polymer-Clay Nanocomposites. (John Wiley & Sons Toronto, 2000).

[3] L.A. Utracki: Clay-Containing Polymeric Nanocomposites. (Rapra Technology Limited United Kingdom, 2004).

[4] E.M. Araújo, T.J.A. Melo, A.D. Oliveira, H.L.D. Araújo, K.D. Araújo and R. Barbosa: Polímeros: Ciência e Tecnologia Vol. 16 (1) (2006), p.38.

[5] A.M.D.L. Lins, G.F. Brito, R.A. Paz, E.M. Araújo and T.J.A. Melo: The polymer processing society 23rd annual Meeting. Salvador, 27 - 31 de maio de 2007. Proceeding.. Salvador, 2007. (BA).

[6] A.C. Habert, C.P. Borges and R. Nóbrega: Processos de separação por membranas. E-papers Rio de Janeiro, (2006).

[7] V.N. Medeiros: Obtenção De Membranas A Partir De Nanocompósitos De PEI E De PES Para Permeação A Gases Mestrado (Dissertação). Campina Grande, 2012. Universidade Federal de Campina Grande (UFCG). (PB).

DOI: 10.24873/j.rpemd.2021.10.846

[8] S. Allcook: Public Administration and Development Vol. 23 (4) (2003), p.373.

[9] X.L. Wang, H.J. Qian, L.J. Chen, Z. Y Lu, Z. Li: Journal of Membrane Science Vol. 311 (2008), p.251.

[10] R. Guan, H. Dai, C., Li, J. Liu and J. Xu: Journal of Membrane Science Vol. 277 (2006), p.148.

[11] M. Khayet and M.C.G. Payo: Desalination Vol. 245 (2009), p.494.

[12] A. Ananth, G. Arthanareeswaran and H. Wang: Desalination Vol. 287 (2011), p.61.