Antifouling compositions and methods

Patent metadata

Field	Value
Publication number	US-10919032-B2
Application number	US-201916252614-A
Country	US
Kind code	B2
Filing date	Jan 19, 2019
Priority date	Jan 19, 2018
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

Compositions that include an ion exchange resin and a polyelectrolyte. The polyelectrolyte may be adsorbed to at least a portion of a surface of the ion exchange resin. Methods of treating a liquid with a composition, and methods of forming a composition that includes an ion exchange resin and a polyelectrolyte.

First claim

The invention claimed is:

1. A composition comprising:
an ion exchange resin, and
a polyelectrolyte, wherein the polyelectrolyte is adsorbed to at least a portion of a surface of the ion exchange resin, and the polyelectrolyte has a weight average molecular weight (M w ) of at least 100,000 g/mol.

2. The composition of claim 1 , wherein the polyelectrolyte comprises a sulfonated repeat unit that is present in the polyelectrolyte at a mole fraction of about 0.5 to about 1.

3. The composition of claim 1 , wherein the polyelectrolyte comprises a sulfonated aromatic repeat unit.

4. The composition of claim 1 , wherein the polyelectrolyte is selected from the group consisting of [1] poly(styrenesulfonic acid) or a salt thereof, [2] poly(2-acrylamido-2-methyl-1-propane sulfonic acid) or a salt thereof, [3] sulfonated poly(ether ether ketone) or a salt thereof, [4] poly(ethylenesulfonic acid) or a salt thereof, [5] poly(methacryloxyethylsulfonic acid) or a salt thereof, and [6] a copolymer thereof.

5. The composition of claim 1 , wherein the polyelectrolyte comprises a charged biomacromolecule.

6. The composition of claim 1 , wherein the polyelectrolyte is selected from the group consisting of [1] a polycarboxylate or a salt thereof, [2] a polyphosphate or a salt thereof, [3] a polyphosphonate or a salt thereof, and [4] a combination thereof.

7. The composition of claim 1 , wherein the polyelectrolyte comprises one or more zwitterionic repeat units.

8. The composition of claim 7 , wherein the zwitterionic repeat unit comprises 3-[2-(acrylamido)-ethyldimethyl ammonio] propane sulfonate.

9. The composition of claim 1 , wherein the polyelectrolyte comprises at least one aromatic sulfonated repeat unit and at least one zwitterionic repeat unit.

10. The composition of claim 9 , wherein the polyelectrolyte comprises a polymer of the following formula:

wherein x is a first mole fraction of about 0.5 to about 0.99, and
y is a second mole fraction of about 0.01 to about 0.5.

11. The composition of claim 1 , wherein the polyelectrolyte has a weight average molecular weight of 100,000 g/mole to about 5,000,000 g/mole.

12. The composition of claim 1 , wherein the polyelectrolyte has a weight average molecular weight of 100,000 g/mole to about 1,000,000 g/mole.

13. The composition of claim 1 , wherein a bulk portion of the ion exchange resin is free of the polyelectrolyte.

14. The composition of claim 1 , wherein the ion exchange resin is an anion exchange resin.

15. A method a treating a liquid, the method comprising:
contacting the liquid with a composition of claim 1 .

16. The method of claim 15 , wherein the liquid comprises water.

17. A method of making the composition of claim 1 , the method comprising:
providing a first mixture comprising a polyelectrolyte and a liquid, wherein the polyelectrolyte has a weight average molecular weight (M w ) of at least 100,000 g/mol; and
contacting an ion exchange resin with the first mixture for a time effective to adsorb at least a portion of the polyelectrolyte to at least a portion of a surface of the ion exchange resin to form the composition.

18. The method of claim 17 , further comprising crosslinking the at least a portion of the polyelectrolyte that is adsorbed to the at least a portion of the surface of the ion exchange resin.

19. The method of claim 18 , wherein the crosslinking comprises (i) contacting the at least a portion of the polyelectrolyte with a crosslinking agent, (ii) heating the composition, (iii) contacting the composition with light for a time effective to photo-crosslink the at least a portion of the polyelectrolyte, or (iv) a combination thereof.

20. The composition of claim 1 , wherein the polyelectrolyte further comprises at least one aromatic sulfonated repeat unit and at least one zwitterionic repeat unit, and having the weight average molecular weight of at least 100,000 g/mole to about 1,000,000 g/mole.

Assignees

• Univ Florida State Res Found

Inventors

• Schlenoff Joseph
• Ghoussoub Yara

Classifications

• C02F1/42 Primary

  by ion-exchange (ion-exchange in general B01J) · CPC title

• B01J41/05

  in the strongly basic form · CPC title

• B01J43/00

  Amphoteric ion-exchange, i.e. using ion-exchangers having cationic and anionic groups; Use of material as amphoteric ion-exchangers; Treatment of material for improving their amphoteric ion-exchange properties (ion-exchange chromatography processes B01D15/36) · CPC title

• B01J47/016

  Modification or after-treatment of ion-exchangers · CPC title

• B01J39/07

  in the weakly acidic form · CPC title