A Review on Surface-Functionalized Cellulosic Nanostructures as Biocompatible Antibacterial Materials

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Nanotechnology

Background:

• Cellulose, an abundant biopolymer, is a promising material for antibacterial applications due to its unique properties.
• Its surface hydroxyl groups allow for versatile chemical functionalization, enabling the incorporation of various antibacterial agents.
• Current research often uses cellulose nanostructures as supports, but the link between chemical modification and antibacterial efficacy needs further exploration.

Purpose of the Study:

• To review surface modification techniques for cellulose nanostructures and derivatives.
• To analyze the antibacterial activity and biocompatibility of modified cellulose.
• To guide the development of durable, non-leaching antibacterial biomaterials.

Main Methods:

• Literature review of cellulose surface modification techniques.
• Analysis of studies reporting antibacterial activity and biocompatibility of modified cellulose.
• Categorization of modification strategies and their outcomes.

Main Results:

• Various chemical modifications (aldehydes, carboxylic acids, amines) enhance cellulose's antibacterial properties.
• Grafting proteins, polymers, metal nanoparticles, and antibiotics onto cellulose surfaces yields diverse functionalities.
• Surface-modified cellulose demonstrates potential for non-leaching and durable antibacterial materials.

Conclusions:

• Chemical surface modification is key to developing effective antibacterial cellulose-based biomaterials.
• Further research is needed to elucidate mechanisms of action and conduct in vivo studies.
• Optimizing the structure-property-efficacy relationship is crucial for advanced applications.