Used as a flocculant in water treatment to aggregate suspended particles for easier removal. Employed in gene delivery systems due to its ability to bind and condense DNA, facilitating cellular uptake. Acts as a surface modifier to enhance adhesion in coatings and films. Applied in the production of antimicrobial surfaces due to its positive charge disrupting microbial membranes. Utilized in carbon dioxide capture systems where it supports efficient gas adsorption. Commonly used in laboratory settings for immobilizing enzymes and proteins on solid supports.