Anion exchange membranes and polymers for use in same

Patent metadata

Field	Value
Publication number	US-11040339-B2
Application number	US-201916696186-A
Country	US
Kind code	B2
Filing date	Nov 26, 2019
Priority date	Jul 22, 2014
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

Embodiments of the invention relate generally to anion exchange membranes and, more particularly, to anion exchange membranes comprising a styrene block copolymer and methods for their manufacture. In one embodiment, the invention provides a polymer according to formula IV, wherein x and y are mol %, QA is or each of R1 and R2 is, independently, a linear alkyl chain or a cyclic alkyl chain, and Z is selected from a group consisting of: a linear alkyl chain, a cyclic alkyl chain, and an alkylene ether chain.

First claim

What is claimed is:

1. A polymer according to formula XII:

wherein x and y are mol % and n is 1-10.

2. A method of preparing the polymer of claim 1 , the method comprising:
preparing the polymer of formula XI

by:
dissolving a polymer of formula X in a quantity of anhydrous dichloromethane;

adding to the mixture a quantity of triethylsilane and trifluoroacetic acid; and
precipitating the polymer of formula XI in methanol,

immersing the polymer of formula XI in a quantity of trimethylamine;
heating the mixture to approximately 50° C. for approximately 48 hours;
rinsing the polymer with water; and
immersing the polymer in sodium hydroxide,
wherein x and y are mol % and n is 1-10.

3. The method of claim 2 , further comprising: preparing the polymer of formula X by:
mixing a polymer of formula VII with a quantity of 6-bromohexanoyl chloride;

adding to the mixture a quantity of anhydrous dichloromethane;
cooling the mixture; and
adding to the mixture a quantity of aluminum chloride,
wherein x and y are mol %.

4. A fuel cell alkaline exchange membrane, a fuel cell isomer, an electrolysis alkaline exchange membrane, or an actuator comprising at least one polymer according to Formula XII:

wherein x and y are mol % and n is 1-10.

Assignees

• Rensselaer Polytech Inst

Inventors

• Bae Chulsung
• Mohanty Angela Dee

Classifications

• C08F8/42

  Introducing metal atoms or metal-containing groups · CPC title

• C08F8/04

  Reduction, e.g. hydrogenation · CPC title

• B01J41/14 Primary

  obtained by reactions only involving unsaturated carbon-to-carbon bonds · CPC title

• C08F2800/10

  as molar percentages · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title