Water separation composite membrane

Patent metadata

Field	Value
Publication number	US-2017113190-A1
Application number	US-201514920549-A
Country	US
Kind code	A1
Filing date	Oct 22, 2015
Priority date	Oct 22, 2015
Publication date	Apr 27, 2017
Grant date	—

Abstract

A water separation composite membrane is provided. The water separation composite membrane includes a carrier with a plurality of pores, wherein the carrier is made of a polymer having a repeat unit of

and a selective layer disposed on the porous carrier, wherein the selective layer consists of a plurality of graphene oxide layers.

First claim

What is claimed is:

1 . A water separation composite membrane, comprising:
a carrier with a plurality of pores, wherein the carrier is made of a polymer having a repeat unit of

and
a selective layer disposed on the porous carrier, wherein the selective layer consists of a plurality of graphene oxide layers.

2 . The water separation composite membrane as claimed in claim 1 , wherein the pores of the carrier have a diameter between 100 nm and 300 nm.

3 . The water separation composite membrane as claimed in claim 1 , wherein the polymer is polyamide or polycarbonate.

4 . The water separation composite membrane as claimed in claim 1 , wherein the selective layer has a thickness between 200 nm and 3000 nm.

5 . The water separation composite membrane as claimed in claim 1 , wherein the selective layer has a thickness between 400 nm and 2000 nm.

6 . The water separation composite membrane as claimed in claim 1 , wherein the water separation composite membrane has a water vapor permeance rate between 1×10 −6 mol/m 2 sPa and 1×10 −5 mol/m 2 sPa.

7 . The water separation composite membrane as claimed in claim 1 , wherein the dehumidifying composite membrane has a water/air separation factor between 200 and 3000.

8 . A water separation composite membrane, comprising:
a carrier with a plurality of pores; and a selective layer disposed on the porous carrier, wherein the selective layer consists of a plurality of graphene oxide layers and an organic compound distributed between any two adjacent graphene oxide layers, wherein the organic compound has a structure represented by Formula (I) or Formula (II)

wherein X is independent —OH, —NH 2 , —SH,

R 1 and R 2 are independent hydrogen, C 1-12 alkyl; A is

and, n is 2-3 when X is —OH, —NH 2 , or —SH, and n is 0-1 when X is

9 . The water separation composite membrane as claimed in claim 8 , wherein the carrier has a plurality of pores, and the carrier is made of a polymer having a repeat unit of

10 . The water separation composite membrane as claimed in claim 9 , wherein the pores of the carrier have a diameter between 100 nm and 300 nm.

11 . The water separation composite membrane as claimed in claim 8 , wherein the polymer is polycarbonate or polyamide.

12 . The water separation composite membrane as claimed in claim 8 , wherein the selective layer has a thickness between 200 nm and 4000 nm.

13 . The water separation composite membrane as claimed in claim 8 , wherein the selective layer has a thickness between 800 nm and 3000 nm.

14 . The water separation composite membrane as claimed in claim 8 , wherein the organic compound is

15 . The water separation composite membrane as claimed in claim 8 , wherein the organic compound further reacts with the graphene oxide layer.

16 . The water separation composite membrane as claimed in claim 8 , wherein there is covalent bond, hydrogen bond, or ionic bond between the organic compound and the graphene oxide layer.

17 . The water separation composite membrane as claimed in claim 8 , wherein there is an interval between any two adjacent graphene oxide layers, and a swelling degree of the interval is between 0.1% and 20.0%.

18 . The water separation composite membrane as claimed in claim 8 , wherein the weight ratio of the organic compound to the graphene oxide layer is from 0.1 to 80.

19 . The water separation composite membrane as claimed in claim 8 , wherein the water separation composite membrane has a water vapor transmission rate between 5×10 −6 mol/m 2 sPa and 5×10 −5 mol/m 2 sPa.

20 . The water separation composite membrane as claimed in claim 8 , wherein the water separation composite membrane has a water/air separation factor between 200 and 20000.

Assignees

• Ind Tech Res Inst

Inventors

• Lai Yu-Lun
• Chang Chih-Chang
• Yen Shao-I
• Hsu Jung-Nan
• Kuo Chun-Nan

Classifications

• B01D53/268 Primary

  by diffusion · CPC title

• B01D2325/20

  Specific permeability or cut-off range · CPC title

• B01D2325/02

  Details relating to pores or porosity of the membranes · CPC title

• B01D71/56

  Polyamides, e.g. polyester-amides · CPC title

• B01D71/50

  Polycarbonates · CPC title