Anti-fouling chiral surfaces for membrane filtration and methods therefor

Patent metadata

Field	Value
Publication number	US-11712665-B2
Application number	US-202117496151-A
Country	US
Kind code	B2
Filing date	Oct 7, 2021
Priority date	Jul 9, 2014
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

The present disclosure relates to, inter alia, a modified surface comprising an optically active monomer, a polymeric material having a surface onto which the optically active monomer is covalently bound. In one aspect, a membrane comprising an optically active monomer, a poly(aryl sulfone) membrane having a surface onto which the optically active monomer is covalently bound. The present disclosure also relates to a method of modifying a surface, the method comprising applying sufficient energy to a surface to induce covalent bonding with an optically active monomer, and contacting the optically active monomer with the surface. In one aspect, a method of modifying a surface of a poly(aryl sulfone) membrane is disclosed. In another aspect, a method of synthesizing an optically active monomer is disclosed. In one aspect, a method of filtration of chiral compounds is disclosed.

First claim

What is claimed is:

1. A method of modifying a surface, the method comprising:
applying sufficient energy to a surface to induce covalent bonding with an optically active monomer; and
contacting the optically active monomer with the surface,
wherein the optically active monomer is a compound of the following Formula II:

wherein R2 is an optically active substituent,
n is a number from 1 to 6,
Q is NH or O, and
R 4 is H or CH 3 .

2. The method of modifying a surface according to claim 1 , further comprising
contacting an initiating agent with the surface onto which the optically active monomer is to be covalently bound.

3. The method of modifying a surface according to claim 1 , the method comprising:
providing a poly(aryl sulfone) membrane having a surface;
exposing the surface of the poly(aryl sulfone) membrane to an atmospheric pressure plasma (APP) source;
contacting an optically active monomer with the exposed surface of the poly(aryl sulfone) membrane; and
applying heat to the surface of the poly(aryl sulfone) membrane.

4. The method of modifying a surface according to claim 3 , further comprising:
contacting an initiating agent with the surface of the poly(aryl sulfone) membrane.

5. The method of modifying a surface according to claim 3 , further comprising:
contacting the heated surface of the poly(aryl sulfone) membrane with water.

6. The method of claim 3 , wherein the APP source is helium and oxygen gases.

7. The method of claim 1 , wherein R 2 is

8. The method of claim 1 , wherein the optically active monomer is a compound of the following Formula III:

wherein Q is NH or O,
n is a number from 1 to 6, and
R 4 is H or CH 3 .

9. The method of claim 1 , wherein the optically active monomer is a compound of the following Formula IV:
[Formula IV]

wherein Q is NH or O,
n is a number from 1 to 6, and
R 4 is H or CH 3 .

10. The method of claim 3 , wherein the poly(aryl sulfone) membrane is exposed to heat in the range from 30° C. to 100° C.

11. The method of claim 10 , wherein the poly(aryl sulfone) membrane is exposed to heat in the range from 50° C. to 70° C.

12. The method of claim 3 , wherein the poly(aryl sulfone) membrane is exposed to heat for 1 to 4 hours.

13. The method of claim 3 , wherein the heat is applied by placing the poly(aryl sulfone) membrane in an oven at a temperature between 50 to 70° C. for 1 to 4 hours.

Assignees

• Rensselaer Polytech Inst

Inventors

• Belfort Georges
• Imbrogno Joseph

Classifications

• B01D67/00931

  by introduction of specific groups after membrane formation, e.g. by grafting · CPC title

• B01D65/08 Primary

  Prevention of membrane fouling or of concentration polarisation · CPC title

• B01D61/007

  Separation by stereostructure, steric separation · CPC title

• B01D67/0093

  Chemical modification · CPC title

• B01D69/02

  characterised by their properties · CPC title