Skip to Main content Skip to Navigation
Journal articles

A versatile route to modify polyethersulfone membranes by chemical reduction of aryldiazonium salts

Abstract : Ultrafiltration polyethersulfone membranes were modified covalently by chemical reduction of aryl diazonium salts. Functionalizations were performed with four aryl diazonium salts bearing different functional groups (4-benzyltriphenylphosphonium diazonium, 4-nitrophenyl diazonium, 4-benzonitrile diazonium and 4-phenylacetic acid diazonium) so as to demonstrate the versatility of the method. The efficiency of the different functionalizations was checked with various characterization techniques. Attenuated Total Reflectance Fourier Transform Infra Red spectroscopy revealed the presence of 4-nitrophenyl, 4-benzonitrile and 4-phenylacetic acid groups at the surface of the different modified membranes but no characteristic vibration band was detected on the surface of the membrane modified with 4-benzyltriphenylphosphonium diazonium. The presence of 4-benzyltriphenylphosphonium, however, could be demonstrated by both Energy Dispersive X-ray spectroscopy (detection of the Kα ray of phosphorous at 2.015 keV) and streaming current measurements (shift of the membrane isoelectric point). Finally, dead-end filtration of an antibiotic (tylosin) was carried out with the unmodified membrane and the membrane modified by 4-benzyltriphenyl-phosphonium diazonium. Experiments revealed that the transport properties of the grafted membrane were significantly modified, with a significant increase in rejection mainly due to electrostatic repulsions between the surface of the modified membrane and tylosin.
Document type :
Journal articles
Complete list of metadatas

Cited literature [24 references]  Display  Hide  Download

https://hal-univ-rennes1.archives-ouvertes.fr/hal-00835415
Contributor : Laurent Jonchère <>
Submitted on : Tuesday, June 25, 2013 - 7:37:35 PM
Last modification on : Friday, July 10, 2020 - 4:24:00 PM
Long-term archiving on: : Thursday, September 26, 2013 - 4:21:24 AM

File

JMS417-418_131-postprint-v2.pd...
Files produced by the author(s)

Identifiers

Citation

Matthieu Picot, Roderic Rodulfo, Irène Nicolas, Anthony Szymczyk, Frédéric Barrière, et al.. A versatile route to modify polyethersulfone membranes by chemical reduction of aryldiazonium salts. Journal of Membrane Science, Elsevier, 2012, 417-418, pp.131-136. ⟨10.1016/j.memsci.2012.06.025⟩. ⟨hal-00835415v2⟩

Share

Metrics

Record views

430

Files downloads

993