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Composite biomimetic membrane with artificial water channel

A biomimetic membrane and compound technology, applied in the field of biomimetic membranes, can solve problems such as insufficient large-scale development

Pending Publication Date: 2022-07-08
CENT NAT DE LA RECHERCHE SCI +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, these results are still insufficient for large-scale development

Method used

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  • Composite biomimetic membrane with artificial water channel
  • Composite biomimetic membrane with artificial water channel
  • Composite biomimetic membrane with artificial water channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] Example 1: Synthesis of biomimetic membrane I4RO according to the present invention.

[0118] Materials and Methods

[0119] According to Le Duc and Licsandru (Y. Le Duc et al., International Applied Chemistry 2011, 50(48), 11366-11372; E. Licsandru et al., Journal of the American Chemical Society, 2016, 138, 5403-5409) Compound HC6 (a compound of formula I where X=O and R=hexyl) was synthesized by the method described in . Meta-phenylenediamine MPD, trimesoyl chloride TMC and hexane were purchased from ALDRICH. Commercial support films used were of the M-PS20-GPET (Nanostone Water, USA) and M-PS35-GPP (Solecta Membranes, USA) types.

[0120] 31.6 to 65.1 mM of HC6 compound, depending on the product used, was dissolved in 5 mL of ethanol (see Table 1 below).

[0121] Add 1 mL of deionized water (alcohol:water volume ratio 85 / 15 v / v), then homogenize with ultrasound for 15 minutes. The solution is then left to stand for 1 to 3 hours without stirring before use. The ...

Embodiment 2

[0133] Example 2: Method for Static Characterization of Composite Biomimetic Membranes and Characterization During Filtration

[0134] Transmission electron microscopy analysis revealed a very high degree of organization at the nanoscale (see figure 2 ). In fact, these photographs show the formation of reference film TFC films with a thickness of 300-350 nm in polyamide PA, while the thickness of the biomimetic film I4RO is greatly reduced to 70-150 nm. For the reference film TFC in polyamide PA, these structures have peak and trough morphologies with a thickness of 30 nm, which is greatly reduced to 15–20 nm for the biomimetic film I4RO. It is also remarkable to observe the distribution of artificial water channel AWCs in the polymer matrix, where the SEM images highlight the formation of supramolecular clusters at the 30–40 nm scale, resulting in the formation of nanometers aligned parallel to each other and very uniform in the polyamide matrix. channel area.

[0135] At...

Embodiment 3

[0153] Example 3: Comparison of the efficiency of biomimetic films comprising I-quadruplexes (according to the invention) and films comprising nanocrystals.

[0154]The efficiency of the biomimetic membranes prepared according to the present invention was compared with that prepared according to the conventional method, which does not use a colloidal suspension, but a nanocrystallization method: add 50 μL of a concentrated methanol solution of 100 or 200 mM HC8 to 10 ml In MPD aqueous solution, a suspension of HC8 nanocrystals (concentration: 0.49 mM or 0.99 mM) was obtained with a total volume of 10.05 mL; (MeOH:H2O=0.5:99.5) According to Itsvan Kocsis, "Supramolecular Artificial Water Channels: From Molecular Procedure described in Design to Membrane Materials (Supramolecular artificial water channels: from molecular design tomembrane materials), dissertation for PhD degree in Chemistry and Physical Chemistry of Materials, University of Montpellier, May 6, 2018 ( http: / / ...

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Abstract

The present invention relates to the field of biomimetic membranes with artificial water channels, in particular their use in the production and management of drinking water. The invention relates to a biomimetic membrane with an artificial water channel, a synthesis method of the biomimetic membrane and application of the biomimetic membrane in brackish water and seawater desalination, ultrapure water production or pollutant filtration.

Description

technical field [0001] The present invention relates to the field of biomimetic membranes with artificial water channels, in particular its use in the production and management of drinking water. [0002] The present invention relates to a biomimetic membrane with artificial water channel, its synthesis method, and its use in brackish water and seawater desalination, ultrapure water production or pollutant filtration. Background technique [0003] Water scarcity and problems associated with lack of drinking water are well known (Eliasson, J Nature 2015, 517, 6-7). Dealing with the lack of basic resources has become increasingly urgent in the context of simultaneous increases in population and economic activity. Keeping supply and demand in balance should have a significant impact on climate change due to emissions from industry. Several cutting-edge technologies have been explored in recent decades in response to the growing demand for water supplies. In terms of water, b...

Claims

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Application Information

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IPC IPC(8): B01D69/10B01D69/12B01D71/56
CPCB01D69/125B01D69/105B01D71/56Y02A20/131B01D67/0006B01D67/00933B01D61/145C02F1/444C08L77/06B01D2323/30B01D2325/20B01D2325/04C02F2103/08B01D69/1251
Inventor 米哈伊尔-杜米特鲁·巴尔博尤玛丽亚·迪·温琴佐阿尔贝托·蒂拉费里
Owner CENT NAT DE LA RECHERCHE SCI
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