WATER SEPARATION COMPOSITE MEMBRANE
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.
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.