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    New membranes from PEEK-WC and its derivatives

    Year: 2002

    Journal: Desalination 145 (2002) 47-52, 20111221

    Authors: A. Gordano, G. Clarizia, A. Torchia, F. Trotta, E. Drioli

    Organizations: aResearch Institute on Membrane and Modelling of Chemical Reactors, IRMERC-CNR, via P Bucci, I-87030 Rende, Italy Tel. +39 (984) 492014; Fax +39 (984) 402103; e-mail: gordano@irmerc.cs.cnr.it bDepartment of Inorganic, Physical and Material Chemistry, University of Torino, V Pietro Giuria, I-10125 Torino, Italy

    Nitrated and sulfonated PEEK-WC with various degrees of substitution were obtained. The modified PEEK and its derivatives are able to form asymmetric membranes. The sulfonation was carried out to increase hydrophilicity and permeability. The insertion of the nitro group allow us to obtain a new material with possible positive properties and also to have a reactive group suitable for further modifications through previous reduction to the amino group. Symmetric and asymmetric membranes made from these polymers were prepared and characterized. The influence of evaporation time, and of the functional groups on membrane morphology and performances were analyzed. Membrane morphology was investigated by using Atomic Force Microscopy.