Polyethylenimine (PEI) is a highly branched cationic polymer known for its strong ionic interactions, high charge density, and excellent adhesion properties. Its unique structure enables efficient complexation with nucleic acids, making it widely used in gene delivery, surface modifications, and flocculation applications. PEI’s ability to interact with negatively charged surfaces also enhances its role as a dispersant, emulsifier, and adhesion promoter.
bPEI 70000 contains primary, secondary, and tertiary amine groups in approximately 25/50/25 ratio.
Applications:
Gene Delivery & Biotechnology: Acts as a non-viral vector in DNA/RNA transfection for gene therapy and biomedical research.
Coatings & Adhesives: Enhances adhesion, water resistance, and crosslinking in industrial coatings, paints, and adhesives.
Water Treatment & Flocculants: Functions as a cationic flocculant and dispersant for wastewater treatment and industrial processes.
Paper & Textile Industry: Improves ink retention and surface properties in paper coatings and textile treatments.
Catalyst & Resin Modification: Serves as a functional polymer in ion-exchange resins, catalyst supports, and crosslinked networks.
