TFC polyamide membranes modified by grafting of hydrophilic polymers: an FT-IR/AFM/TEM study
| Autor: | S. Belfer, Viatcheslav Freger, Jack Gilron |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
chemistry.chemical_classification
Materials science Filtration and Separation Polymer Biochemistry chemistry.chemical_compound Membrane Monomer Polymerization chemistry Polyamide Polymer chemistry Surface modification General Materials Science Nanofiltration Physical and Theoretical Chemistry Fourier transform infrared spectroscopy |
| Zdroj: | Journal of Membrane Science. 209:283-292 |
| ISSN: | 0376-7388 |
| DOI: | 10.1016/s0376-7388(02)00356-3 |
| Popis: | Surface modification using grafting of a hydrophilic polymer onto the membrane surface is a possible route to improving the fouling properties of polyamide thin-film composite membranes. The structure of nanofiltration (NF) and reverse osmosis (RO) membranes modified using graft polymerization of acrylic (AA) monomers was visualized and analyzed using attenuated total reflection–Fourier transform infrared spectroscopy, atomic force microscopy and transmission electron microscopy. The results show that a layer of AA polymer is indeed formed on the polyamide surface, which could be accompanied by a change of the surface morphology. It was observed that for the NF membranes studied polymerization could also take place inside the pores of the support as a result of penetration of the monomer through the active layer, particularly for high degrees of grafting. It suggests that the modification procedures should be optimized so that the latter effect is minimized. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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