AJAC  Vol.4 No.7 A , July 2013
Surface Modification of PEEK-WC Membranes by Wet Phase Inversion for Ni(II) Adsorption
Abstract: This work focuses on the preparation and characterization of flat sheet membrane based on modified polyether ether keetone (PEEK-WC). Additives, such as dibutyl phatalate (DBP) and diethyl hexyl phosphoric acid (DEHPA), were used to investigate their effect on membranes properties which are prepared by immersion precipitation. For that, several techniques were used to characterize membranes like thermal analyses, scanning electron microscopy and microanalyses. SEM pictures show versatile structures of the membranes from dense to porous membranes characterized by a sponge and finger like structure. Moreover, microanalyses of both surfaces, bottom and top surfaces show an aggregation of DEHPA at the top surface of the membrane. However, by adding dibutylphtalate, a well dispersion of the extractant was observed. Initially, micro-porous membranes were used in supported liquid membranes experiments for Ni(II) metal ions transports using diethyl hexyl phosphoric acid (DEHPA) as carrier. The extraction efficiency was very low about 28%, but enhanced by adding xylene to the organic phase. However, the modified membranes (with additives) by DBP and DEHPA were used on solid liquid extraction of Ni(II). The results show that by adding the plasticizer and the extractant, the efficiency of the system reached 63%.
Cite this paper: S. Bey, M. Benamor and E. Drioli, "Surface Modification of PEEK-WC Membranes by Wet Phase Inversion for Ni(II) Adsorption," American Journal of Analytical Chemistry, Vol. 4 No. 7, 2013, pp. 33-39. doi: 10.4236/ajac.2013.47A005.

[1]   H. Myeong-Jin and B. Dibakar, “Changes in Morphology and Transport Characteristics of Polysulfone Membranes Prepared by Different Demixing Conditions,” Journal of Membrane Science, Vol. 98, No. 3, 1995, pp. 191-200. doi:10.1016/0376-7388(94)00181-W

[2]   R. E. Kesting, “Synthetic Polymeric Membranes. A Structural Perspective,” 2nd Edition, Wiley, New York, 1985.

[3]   M. Mulder, “Basic Principles of Membrane Technology,” Kluwer, Dordrecht, 1991. doi:10.1007/978-94-017-0835-7

[4]   Y. Liu, G. H. Koops and H. Strathmann, “Characterization of Morphology Controlled Polyethersulfone Hollow Fiber Membranes by the Addition of Polyethylene Glycol to the Dope and Bore Liquid Solution,” Journal of Membrane Science, Vol. 223, No. 1-2, 2003, pp. 187-199. doi:10.1016/S0376-7388(03)00322-3

[5]   J. Xu and Z. L. Xu, “Poly(Vinyl Chloride) (PVC) Hollow Fiber Ultrafiltration Membranes Prepared from PVC/Additives/Solvent,” Journal of Membrane Science, Vol. 208, No. 1-2, 2002, pp. 203-212. doi:10.1016/S0376-7388(02)00261-2

[6]   M. Sivakumar, D. R. Mohan and R. Rangarajan, “Studies on Cellulose Acetate-Polysulfone Ultrafiltration Membranes II. Effect of Additive Concentration,” Journal of Membrane Science, Vol. 268, No. 2, 2006, pp. 208-219. doi:10.1016/j.memsci.2005.06.017

[7]   A. Idris, N. M. Zain and M. Y. Noordin, “Synthesis, Characterization and Performance of Asymmetric Polyethersulfone (PES) Ultrafiltration Membranes with Polyethylene Glycol of Different Molecular Weights as Additives,” Desalination, Vol. 207, No. 1-3, 2007, pp. 324-339. doi:10.1016/j.desal.2006.08.008

[8]   S. Bey, M. G. Bounomenna, M. Benamor and E. Drioli, “Preparation and Characterization of Microporous Membranes Prepared by Wet Phase Inversion. Application to Ni(II) Transport,” Materials Science Forum, Vol. 609, 2009, pp. 183-188. doi:10.4028/

[9]   C. Fontas, R. Tayeb, M. Dhahbi, E. Gaudichet, F. Thominette, P. Roy, K. Steenkeste, M.-P. F. Aupart, S. Tingry, E. T. Peyroz and P. Seta, “Polymer Inclusion Membranes: The Concept of Fixed Sites Membrane Revised,” Journal of Membrane Science, Vol. 290, No. 1-2, 2007, pp. 62-72. doi:10.1016/j.memsci.2006.12.019

[10]   Y.-J. Wang and D. Kim, “The Effect of F127 Addition on the Properties of PEG-DA/PVdF Cross-Linked Gel Polymer Electrolytes,” Journal of Membrane Science, Vol. 312, No. 1-2, 2008, pp. 76-83. doi:10.1016/j.memsci.2007.12.037

[11]   M. Resina, J. Macanas, J. De Gyves and M. Munez, “Development and Characterization of Hybrid Membranes Based on an Organic Matrix Modified with Silanes for Metal Separation,” Journal of Membrane Science, Vol. 289, No. 1-2, 2007, pp. 150-158. doi:10.1016/j.memsci.2006.11.049