Carboxylated cellulose nanofibers are widely used in the biomedical field due to their biocompatibility and high surface area. They are employed in drug delivery systems, where they help in the controlled release of medications, enhancing the efficacy and reducing side effects. In tissue engineering, these nanofibers serve as scaffolds, promoting cell growth and tissue regeneration.

In the environmental sector, carboxylated cellulose nanofibers are utilized in water purification processes. Their high adsorption capacity makes them effective in removing heavy metals and organic pollutants from wastewater. They are also used in the production of biodegradable packaging materials, offering a sustainable alternative to conventional plastics.

In the electronics industry, these nanofibers are incorporated into flexible and transparent films for use in displays and sensors. Their mechanical strength and optical properties make them suitable for advanced applications in wearable technology and electronic devices.

Additionally, carboxylated cellulose nanofibers are used in the food industry as stabilizers and thickeners, improving the texture and consistency of various products. Their natural origin and non-toxic nature make them a preferred choice in food applications.