Charged polymer network
Quaternary ammonium groups can form fixed cationic sites in ion-exchange resins and membranes.
- Reagents
- polymer ammonium sites
- Conditions
- material specific
- Reaction class
- polymer functionalization
- Equation
- polymer-R4N+ -> ion-exchange material
Overview
Quaternary ammonium groups can form fixed cationic sites in ion-exchange resins and membranes.
Transformation
Quaternary ammonium compounds → Ion-exchange materials
- Equation
- polymer-R4N+ -> ion-exchange material
- Reagents
- polymer ammonium sites
- Environment
- material specific
- Reaction class
- polymer functionalization
- Mechanism
- polymer functionalisation
- Evidence level
- curated extension
Scope and limitations
- Scope
- Applies to charged polymer materials containing ammonium sites.
- Limitations
- Ion-exchange performance depends on the polymer material.
Related reactions
- Alkylation: Amines → Quaternary ammonium compounds
Amines can be further alkylated to permanent cationic quaternary ammonium groups used in antimicrobial and ion-exchange materials.
- Surface immobilization: Quaternary ammonium compounds → Antibacterial coatings
Immobilized quaternary ammonium groups are studied for contact-active antibacterial coatings.
References
- Process for preparing physically stable quaternary ammonium anion exchange resins by chloromethylation and aminationDow Chemical Company · US Patent US4207398A · 1980
Supports chloromethylated polymer amination as a route to quaternary ammonium anion-exchange resins.