Development of a novel photochemical technique for modifying poly (arylsulfone) ultrafiltration membranes

Yamagishi, Hideyuki; Crivello, James V.; Belfort, Georges

doi:10.1016/0376-7388(95)00063-i

Cited by 195 publications

(118 citation statements)

References 30 publications

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“…Various characterization techniques have been used to study the degradation of PES in general, including x-ray photoelectron spectroscopy (XPS), 10 -12 gel permeation chromatography (GPC), 13 -16 Fourier transform infrared spectroscopy (FTIR), 13,16,17 UV-Vis spectroscopy (UV), 5,6,8,13,15,17,18 fluorescent x-ray emission spectroscopy (XES), 19 thermogravimetric analysis (TGA), 20 pyrolysis/gas chromatography/mass spectrometry (py/GC/MS), 20 field emission scanning electron microscopy (FESEM) 21 and high-pressure liquid chromatography (HPLC). 17 Munro and Clark 12 used XPS to monitor changes in surface chemistry in photoirradiated PES films.…”

Section: Analytical Techniques Previously Used For Studies Of the Degmentioning

confidence: 99%

Photodegradation of poly(ether sulphone) Part 1. A time‐of‐flight secondary ion mass spectrometry study

Norrman

Kingshott

Kæselev³

et al. 2004

Surface & Interface Analysis

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An extensive study of the surface chemical changes to poly(ether sulphone) (PES) ultrafiltration membranes is made for the first time by the use of time-of-flight secondary ion mass spectrometry (ToF-SIMS) after photoirradiation at 254 nm with irradiances varying from 10 to 300 mJ cm −2 in a nitrogen atmosphere. Complementary information is provided by analysis with x-ray photoelectron spectroscopy (XPS) and attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR). The versatility, superior specificity and sensitivity of using ToF-SIMS to investigate degradation phenomena are highlighted. The combined results demonstrate that photoirradiation causes a number of chemical changes to the surface: incorporation of oxygen; degradation of the benzene rings and formation of oxidized carbon species; depletion of carbon; reduction of -SO 2 -to some extent; formation of -OH, C O and -SO 3 H groups; and probable formation of -C 6 H 4 -O-C 6 H 5 end-groups. In addition, no -OSO 3 H groups are formed and no formation of SO 2 is detected. Also, it is shown that chain scission dominates below an irradiation dose of ∼200 mJ cm −2 (at 254 nm in a nitrogen atmosphere). At higher doses, cross-linking becomes dominant.

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Section: Analytical Techniques Previously Used For Studies Of the Degmentioning

confidence: 99%

Photodegradation of poly(ether sulphone) Part 1. A time‐of‐flight secondary ion mass spectrometry study

Norrman

Kingshott

Kæselev³

et al. 2004

Surface & Interface Analysis

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“…The photoinduced modification feasibility was with the light absorption by the phenoxyphenyl sulfone chromophore and the cleavage of CAS bonds at the sulfone linkage. 37 The probable mechanism of photoinduced modification was depicted in our earlier experimental study. 29 AA modification was primarily reflected in the weight increase of the modified membranes.…”

Section: Resultsmentioning

confidence: 99%

Comparative study of the hydrolysis of different oils by lipase‐immobilized membranes

Gupta

Ingole

Singh

et al. 2011

J of Applied Polymer Sci

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“…When the radicals are formed at the membrane surface, the polymeric chain grows from the surface. This "grafting from" technique produces polymeric chains covalently linked to the membrane surface in a permanent way [6]. The homopolymerization of monomers in the feed solution can be avoided by the choice of an appropriate wavelength of UV radiation.…”

Section: Modification Of the Membrane Surfacementioning

confidence: 99%

Hybrid Catalytic Membranes: Tunable and Versatile Materials for Fine Chemistry Applications

Emin

Rémigy

et al. 2016

Materials Today: Proceedings

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The aim of this work is the synthesis of polymer-stabilized Pd nanoparticles inside a functionalized polymeric porous membrane and to test them in metal-catalyzed organic reactions. A polymeric membrane support (Polyethersulfone) was functionalized with an ionogen polymer capable of retaining metallic nanoparticles (MNP) or MNP precursors using a UV photo-grafting method. Membranes were also obtained by casting sulfonated polyethersulfone (Cardotype). The reactions were carried out by filtering solutions containing the reactants leading to full conversions within seconds. The amount of PdNP included in the materials and the catalytic activity were influenced by the properties of the grafted network.

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Development of a novel photochemical technique for modifying poly (arylsulfone) ultrafiltration membranes

Cited by 195 publications

References 30 publications

Photodegradation of poly(ether sulphone) Part 1. A time‐of‐flight secondary ion mass spectrometry study

Photodegradation of poly(ether sulphone) Part 1. A time‐of‐flight secondary ion mass spectrometry study

Comparative study of the hydrolysis of different oils by lipase‐immobilized membranes

Hybrid Catalytic Membranes: Tunable and Versatile Materials for Fine Chemistry Applications

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