Antibiofouling composition, antibiofouling membrane and method for forming the same

Patent metadata

Field	Value
Publication number	US-9346022-B2
Application number	US-201213442017-A
Country	US
Kind code	B2
Filing date	Apr 9, 2012
Priority date	Mar 5, 2012
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

The present invention provides an antibiofouling composition, an antibiofouling membrane and a method for forming the same. The antibiofouling composition comprises a copolymer and at least one solvent. The copolymer comprises at least one hydrophobic segment and at least one antibiofouling segment where the hydrophobic segment comprises a plurality of hydrophobic moieties and the antibiofouling segment comprises a plurality of antibiofouling moieties. The molar ratio of the total of hydrophobic moieties to the total of the antibiofouling moieties is 0.5˜6.0.

First claim

What is claimed is:

1. An antibiofouling membrane, being formed by a hydrophobic membrane which is a polytetrafluoroethylene (PTFE) membrane, a polyvinylidene fluoride (PVDF) membrane, or a polypropylene membrane and a copolymer coated stable on a surface of the hydrophobic membrane, wherein the copolymer which is selected from the group consisting of a diblock copolymer and a random copolymer, comprises at least one hydrophobic segment and at least one antibiofouling segment, the hydrophobic segment comprises a plurality of hydrophobic moieties which are derived from polystyrene (PS) having a molecular weight (Mw) between 3000 and 11000DA and, the antibiofouling segment comprises a plurality of antibiofouling moieties which are derived from polyethylene glycol methacrylate (PEGMA) having a molecular weight of 500DA, and the molar mass ratio of PS/PEGMA in the diblock copolymer being 1.5˜2.5, and a coating amount of the copolymer to the surface is 0.01˜1.2mg/cm 2 .

2. The antibiofouling membrane according to claim 1 , wherein the diblock copolymer is PS 52 -b-PEGMA 25 .

3. The antibiofouling membrane according to claim 1 , wherein the diblock copolymer is PS 31 -b-PEGMA 39 .

4. The antibiofouling membrane according to claim 1 , wherein the diblock copolymer is PS 96 -b-PEGMA 27 .

5. The antibiofouling membrane according to claim 1 , wherein the polystyrene having the molecular weight(Mw) between 5500 and 5600DA.

6. The antibiofouling membrane according to claim 1 , wherein the coating amount of the copolymer to the surface is 0.05˜0.25mg/cm 2 .

7. A antibiofouling membrane, said antibiofouling membrane being formed by a polytetrafluoroethylene (PTFE) membrane and a diblock copolymer solution comprising PS 52 -b-PEGMA 25 , the PS 52 -b-PEGMA 25 is coated stable on a surface of the polytetrafluoroethylene (PTFE) membrane, wherein the PS 52 -b-PEGMA 25 is derived from polystyrene and polyethylene glycol methacrylate (PEGMA) having a molecular weight of 500DA by atomic transfer radical polymerization, and the concentration of PS 52 -b-PEGMA 25 is 0.1-10 mg/mL.

8. The antibiofouling membrane according to claim 7 , wherein the Mw molecular weight of the PS 52 -b-PEGMA 25 ranges from 17000˜18000DA.

Assignees

• Chang Yung
• Ruaan Ruoh-Chyu
• Chiag Yen-Che
• Chen Wen-Yih
• Univ Chung Yuan Christian

Inventors

• Chang Yung
• Ruaan Ruoh-Chyu
• Chiag Yen-Che
• Chen Wen-Yih

Classifications

• B01D71/28

  Polymers of vinyl aromatic compounds · CPC title

• B01D71/52

  Polyethers · CPC title

• C09D5/1668

  Vinyl-type polymers · CPC title

• B01D69/12 Primary

  Composite membranes; Ultra-thin membranes · CPC title

• B01D71/34

  Polyvinylidene fluoride · CPC title