Study of the characteristics and the performance of self-made nanoporous polyethersulfone membranes

Boussu, Katleen; Vandecasteele, Carlo; Bruggen, Bart Van der

doi:10.1016/j.polymer.2006.03.048

Cited by 120 publications

(107 citation statements)

References 35 publications

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“…Figure 11 shows the cross- The membranes containing PVP were rather dense with a top layer of a few tens of micrometers. This could be explained by the high PES content in the casting solution (25 g for 75 g of NMP), thus leading to a solution with high viscosity, which favored the formation of membranes with less macrovoids compared with membranes synthesized from casting solutions containing lower PES concentrations [27,28]. On the other hand, the pure PES membrane exhibited a more asymmetrical structure with the presence of macrovoids of a few micrometers in length.…”

Section: Membrane Structurementioning

confidence: 99%

Influence of PVP content on degradation of PES/PVP membranes: Insights from characterization of membranes with controlled composition

Kourde-Hanafi

Loulergue

Szymczyk

et al. 2017

Journal of Membrane Science

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Sodium hypochlorite is widely used to clean/sanitize PES/PVP membranes. However, this strong oxidant is responsible for accelerated polymer ageing, thus impairing PES/PVP membrane lifespan. This work aimed at getting a better understanding of the role of PVP in the degradation of PES/PVP membranes. As the precise chemical composition of commercial membranes is most often unknown, PES/PVP membranes with various PVP to PES ratios (from 0 to 44 wt %) were synthesized and aged dynamically by filtering sodium hypochlorite solutions. PVP oxidization and partial disappearance from the membrane matrix was observed whatever the membrane composition. Moreover, PES-chain scissions were put in evidence even for pure PES membranes, thus highlighting that PES degradation was not systematically related to the presence of PVP. Conversely, PES hydroxylation was observed only for membranes containing PVP, the hydroxylation rate being dependent on the PVP content. Interestingly, the occurrence of PES-chain scissions impacted the membrane

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Section: Membrane Structurementioning

confidence: 99%

Influence of PVP content on degradation of PES/PVP membranes: Insights from characterization of membranes with controlled composition

Kourde-Hanafi

Loulergue

Szymczyk

et al. 2017

Journal of Membrane Science

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“…In the preparation process, nonsolvent water was selected as the coagulation medium, which was commonly used in preparing polymeric membranes. [19][20][21] Here, water showed high miscibility for DMAc but was not soluble for PES and BPA. Therefore, when the PES-BPA-DMAc solution was dropped into water, phase inversion that was caused by the rapid exchange of the solvent DMAc and water occurred.…”

Section: Characterization Of the Imprinted Particlesmentioning

confidence: 99%

Preparation and selective binding characterization of Bisphenol A imprinted polyethersulfone particles

Yang

Zhou

et al. 2007

J of Applied Polymer Sci

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Bisphenol A (BPA) imprinted polyethersulfone (PES) particles were prepared for the recognition of BPA by means of phase inversion method. During the preparation of the BPA-imprinted particles, acetone, ethanol and acetone/ethanol solutions were used to extract the template BPA molecules. The SEM morphology and the recognition experiments suggested that the acetone/ethanol provided an efficient way to extract the BPA from the imprinted PES particles. The binding and recognition ability for the imprinted particles disappeared under alkali condition, and they recovered as soon as possible when the solution changed from alkali condition to neutral or acid condition. With the addition of Na 1 , Mg 21 , and Cl 2 , the binding amounts for the imprinted particles and nonimprinted particles were not changed heavily, which suggested the potential application of the particles in seawater. In the BPA/BPA analogue mixed solution, the imprinted particles showed selectivity for the template molecules BPA. The FTIR results suggested that the PES and BPA interacted through hydrogen bonds.

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“…(Vandezande, 2008). The conformation of the membranes is varied by adding higher molecular weight alcohols (Boussu et al, 2006) (Deshmukh and Li, 1998) (Leblanc et al, 2001), the same solvents used for polymer solution (Bottino et al, 1985) (Konagaya, 2001), or macromolecular additives (Javiya et al, 2008). In the present study, we prepare thin film composite membranes by preparing asymmetric polyether sulfone membranes in a water gelation bath, mixed with 1,3-phenylene diamine with interfacial polymerization in the usual manner.…”

Section: Introductionmentioning

confidence: 99%

Approaches to prepare tfc polyamide membranes by coating diamine during, and/or post formation of asymmetric membranes and their performances

Joshi

Singh

Bhattacharya

2011

Braz. J. Chem. Eng.

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-Thin film composite membranes were prepared by using1,3-phenylene diamine in the gelation bath as well as in coating conditions. The cross-sectional view of the membranes shows different patterns for membranes prepared in a water-bath (Mem-I) and a diamine-containing water bath (Mem-II). The thin film composite membranes prepared using a diamine bath and coating (Mem-III) had improved salt rejecting ability but low volume flux. The performances of the salt rejection follows the order Na 2 SO 4 > NaCl > MgSO 4 > MgCl 2 , as expected. The salt separation performances of the membranes made with higher concentration of 1,3 phenylene diamine follow the order Mem-IIIb > Mem-I > Mem-IIb. For membranes made with low concentration of 1,3-phenylene diamine, the salt separation follows the same trend, (Mem-IIIa > Mem-IIa).

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Study of the characteristics and the performance of self-made nanoporous polyethersulfone membranes

Cited by 120 publications

References 35 publications

Influence of PVP content on degradation of PES/PVP membranes: Insights from characterization of membranes with controlled composition

Influence of PVP content on degradation of PES/PVP membranes: Insights from characterization of membranes with controlled composition

Preparation and selective binding characterization of Bisphenol A imprinted polyethersulfone particles

Approaches to prepare tfc polyamide membranes by coating diamine during, and/or post formation of asymmetric membranes and their performances

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