Tannin-based thin-film composite membranes for solvent nanofiltration

Pérez-Manríquez, Liliana; Neelakanda, Pradeep; Peinemann, Klaus‐Viktor

doi:10.1016/j.memsci.2017.06.078

Cited by 67 publications

(34 citation statements)

References 35 publications

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“…The cyclohexane, benzene and aliphatic moieties of priamine are suitable to increase the hydrophobicity of the membrane surface, which in turn can result in high permeance of non-polar solvents. In addition, TA is a representative polyphenol compound, which can be extracted from a diverse range of natural materials such as trees, plants, nuts and fruits [13,14]. The large number of catechol groups in TA have high reactivity with primary amine groups, leading to the formation of strong, solvent-resistant covalent bonds through the Michael addition and Schiff base reactions [15,16].…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic thin film composite nanofiltration membranes derived solely from sustainable sources

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Hydrophobic thin film composite nanofiltration membranes derived solely from sustainable sources

et al. 2021

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“…Mimicking the hierarchical structures of beetle's back, we speculate that the heterostructured membranes, composed of two materials with reversed hydrophilicity/hydrophobicity, might realize a subtle synergy of dissolution and diffusion. Although such membranes have been rarely reported, some other bioinspired membranes have been prepared and acquire outstanding performances . For instance, inspired by marine mussel, Szekely et al fabricated a nanofiltration membrane by in situ polymerization of dopamine within polybenzimidazole support, acquiring a high DMF permeance (≈26 L m −2 h −1 bar −1 ) …”

Section: Introductionmentioning

confidence: 99%

Beetle‐Inspired Assembly of Heterostructured Lamellar Membranes with Polymer Cluster–Patterned Surface for Enhanced Molecular Permeation

Wang

Yuan

et al. 2019

Adv Funct Materials

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2D lamellar membranes hold great promise in efficient molecular separations of liquid and gas mixtures. However, the simultaneous realization of high permeation and precise sieving (i.e., overcoming the permeation-rejection tradeoff ) of membranes poses a great challenge. Inspired by the structures and functions of the beetle's back, the heterostructured lamellar membranes fabricated through facile and controllable electrostatic atomization method are reported. Particularly, hydrophobic polymer clusters are patterned on hydrophilic laminate (graphene oxide) surfaces to realize the hydrophilic/hydrophobic heterostructure. It shows that the fast dissolution for nonpolar solvents is achieved by the strong affinity polymer clusters, and the ultralow-barrier diffusion is achieved by the weak affinity laminate channels. Therefore, the permeance is remarkably enhanced (over 7 times for nonpolar solvents), while fully retaining membrane rejection. In contrast, hydrophilic clusters are patterned on hydrophobic laminate (reduced graphene oxide) surfaces and exhibit similar behaviors toward polar solvents. Furthermore, the lamellar membrane displays highly ordered layer-by-layer stacking, affording precise molecular rejection. Besides, the lamellar membrane acquires lower thermodynamic energy and hence superior stability under ultrasonic and strong acid or alkali environments, manifesting great potential for long-term practical operation.

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“…We reported recently another membrane for solvent resistant nanofiltration, where tannic acid was used as monomer for the interfacial polymerization. Permeances up to 0.09 L/m2 h bar with a molecular weight cut-off of approximately 800 g/mol (determined with dyes of different molecular weights) were obtained [24]. The replacement of tannic acid with morin resulted in membranes with a 3 times higher permeance with a similar MWCO of approx.…”

Section: Membrane Permeance and Rejection Performancementioning

confidence: 95%

Morin-based nanofiltration membranes for organic solvent separation processes

Pérez-Manríquez

Neelakanda

Peinemann

2018

Journal of Membrane Science

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In this work we demonstrate the successful optimization of the interfacial polymerization reaction for the manufacture of organic solvent nanofiltration membranes by replacing the toxic amines commonly used for this method with the natural occurring bio-polyphenol morin. For the manufacture of this type of OSN membrane a crosslinked PAN support was coated by interfacial polymerization using morin as the monomer of the aqueous phase and terephtaloyl chloride as the monomer of the organic phase. These membranes showed an exceptional performance and resistance to NMP by having a a permeance of 0.3 L/m 2 h bar in NMP with a rejection of 96% of Brilliant Blue dye which has a molecular weight of 825.97 g/mol, making these membranes attractive for harsh industrial separation processes due to their ease of manufacture, low cost, and excellent performance. Highlights  Morin was used as a monomer for interfacial polymerisation.  Solvent-resistant nanofiltration membranes with competitive fluxes were manufactured.  Cross-linked PAN was applied as support membrane.

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Tannin-based thin-film composite membranes for solvent nanofiltration

Abstract: Highlights  Tannic acid was used as an effective building block for solvent-resistant membranes.  NMP resistant membranes with a molecular weight cutoff below 800 g/mol were manufactured.  Cross-linked PAN was applied as support membrane.

Cited by 67 publications

References 35 publications

Hydrophobic thin film composite nanofiltration membranes derived solely from sustainable sources

Hydrophobic thin film composite nanofiltration membranes derived solely from sustainable sources

Beetle‐Inspired Assembly of Heterostructured Lamellar Membranes with Polymer Cluster–Patterned Surface for Enhanced Molecular Permeation

Morin-based nanofiltration membranes for organic solvent separation processes

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