SEM study of the morphology of asymmetric cellulose acetate membranes produced from recycled agro-industrial residues: sugarcane bagasse and mango seeds |
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| Authors: | Moacir Fernandes Ferreira Júnior Elaine Angélica Ribeiro Mundim Guimes Rodrigues Filho Carla da Silva Meireles Daniel Alves Cerqueira Rosana Maria Nascimento de Assunção Marcos Marcolin Mara Zeni |
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| Affiliation: | 1.Instituto de Química da Universidade Federal de Uberlandia (IQ-UFU),Uberlandia,Brazil;2.Instituto de Ciências Ambientais e Desenvolvimento Sustentável da Universidade Federal da Bahia (ICADS-UFBA),Barreiras,Brazil;3.Faculdade de Ciências Integradas do Pontal da Universidade Federal de Uberlandia (FACIP-UFU),Ituiutaba,Brazil;4.Departamento de Física e Química,Universidade de Caxias do Sul (UCS),Caxias do Sul,Brazil |
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| Abstract: | Cellulose, obtained both from sugarcane bagasse and mango seeds, was used for synthesizing cellulose acetate in order to produce
asymmetric membranes. These were compared to membranes of commercial cellulose acetate (Rhodia). All produced membranes were
asymmetric, characterized by the presence of a dense skin and a porous support. Differences regarding the morphology of the
surfaces as well as of the porous support can be noticed. Scanning Electron Microscopy (SEM) showed that the morphology of
the superficial layer, responsible for transport, depends on the different lignin content of the starting material and also
on the viscosity average molecular weight of the cellulose acetates produced from sugarcane bagasse, mango seed, and Rhodia’s
commercial cellulose acetate. |
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