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Type: Artigo de periódico
Title: Recuperation Of Polyvinyl Alcohol (pva) Through Microporous Membranes
Author: Bassetti F.J.
Peres L.
Petrus J.C.C.
Abstract: Microporous membranes were prepared using the technique of phase inversion by immersion-coagulation in the presence of a non solvent, dissolving different concentrations of polyvinylidene fluoride (PVDF) pure or blended with other polymers, such as polyethylene glycol (PEG) and polyvinyl acetate (PVAc) in N'N'dimetilformamide (DMF). Characterization of the membranes was done by Scanning Electron Microscopy (SEM), permeability tests and polyvinyl alcohol (PVA) retention experiments. The effect of membrane porosity on permeate flux and PVA retention was verified using a tangential ultrafiltration pilot. The operational conditions were 3 kgf/cm2, 50°C and tangential velocity of 0.6 m/s.
Rights: aberto
Identifier DOI: 
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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