2007
DOI: 10.1002/cphc.200600512
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Physico‐Chemical Characterization of Nanofiltration Membranes

Abstract: This study presents a methodology for an in-depth characterization of six representative commercial nanofiltration membranes. Laboratory-made polyethersulfone membranes are included for reference. Besides the physical characterization [molecular weight cut-off (MWCO), surface charge, roughness and hydrophobicity], the membranes are also studied for their chemical composition [attenuated total reflectance Fourier spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS)] and porosity [positron annihila… Show more

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Cited by 90 publications
(65 citation statements)
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“…These membranes were characterized for their hydrophobicity (by measuring the contact angle), their molecular weight cut-off (MWCO) and their surface charge, as described previously. [22] The results are summarized in Table 1. Table 1 indicates that NFPES10 and NTR7450 have the most hydrophobic top layer (or the highest contact angle).…”
Section: Introductionmentioning
confidence: 98%
“…These membranes were characterized for their hydrophobicity (by measuring the contact angle), their molecular weight cut-off (MWCO) and their surface charge, as described previously. [22] The results are summarized in Table 1. Table 1 indicates that NFPES10 and NTR7450 have the most hydrophobic top layer (or the highest contact angle).…”
Section: Introductionmentioning
confidence: 98%
“…Fourier-transform infrared (FTIR) spectroscopy is a valuable analytical technique that is typically used qualitatively to assess the structures and changes in materials such as PA membranes [18,[32][33][34][35] [39]. The usefulness of this technique can extend to quantitative analyses that can reveal more detailed information regarding changes in polymer structures that are the result of degradation or other physical and/or chemical changes.…”
Section: Introductionmentioning
confidence: 99%
“…The future business fund of the German chemical group BASF (Ludwigshafen, Germany) has devoted a significant proportion of its 105 million US dollars to nanotechnology research for water purification. Commercial nanofiltration membranes (Boussu et al, 2007) with a pore size of 1.25-1.55 Å are currently produced and are available on the market. Altairnano's Nanocheck is a new commercial product that contains lanthanum NPs able to absorb phosphates from aqueous environments: applying these in ponds and swimming pools effectively removed available phosphates and prevented the growth of algae.…”
Section: Nanotechnologies For Water Purificationmentioning
confidence: 99%