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https://hdl.handle.net/1822/25534
Título: | Alkali and acid polysaccharides blend nanofibrous membranes prepared by electrospinning |
Autor(es): | Santos, Carla Silva, Carla J. S. M. Büttel, Zsófia Guimarães, Rodrigo Tamagnini, Paula Zille, Andrea |
Data: | 27-Set-2013 |
Resumo(s): | Electrospinning allows the production of polymer fibres with diameters in the sub-micron size range, through the application of an external electric field, keeping intact the bulk properties of the polymers. Electrospun membranes possess some unique structural features, such as a high surface to volume ratio and very good mechanical performance, properties that are determinant to their use in several applications such as air and liquid filtration, tissue engineering, optical and chemical sensors [1]. In this work, alkali and acid biopolysaccharides blended with polyvinyl alcohol (PVA) were electrospinned into a polyvinylidene difluoride (PVDF) basal microfiltration membrane, with the goal of developing a mid-layer nanofibrous porous support for exploitable thin-film composite (TFC) membranes for water filtration. The alkali and acid biopolysaccharides chosen were, respectively, chitosan (CS), a cationic polyelectrolyte (in this case with deacetylation degree around 85), and cyanobacterial extracellular polymeric substances (EPS), an acidic polysaccharide isolated from Cyanothece sp.CCY 0110 [2]. The electrospun blended nanofibrous membranes were fully characterized in order to investigate their morphology, diameter, structure, mechanical and thermal properties. The results showed that these membranes have great potential for filtration purposes [3]. |
Tipo: | Poster em conferência |
Descrição: | Poster apresentado no "Smart and functional coatings conference", Torino, Italy, 2013 |
URI: | https://hdl.handle.net/1822/25534 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | DET/2C2T - Comunicações em congressos internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Poster Smart&Functional Coatings_2013_DC_final.pdf | Poster Torino 2013 | 1,24 MB | Adobe PDF | Ver/Abrir |