Cellulose Cryogels as Promising Materials for Biomedical Applications

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Materials Engineering

Background:

• Cellulose is a biocompatible, non-toxic natural polymer with tunable properties.
• Cryogelation is an emerging technique for creating porous cellulose materials.
• These materials are suitable for various biomedical applications.

Purpose of the Study:

• To review the structure and properties of cellulose as a biomaterial.
• To discuss cellulose dissolution strategies and cryogelation factors.
• To highlight recent advancements in cellulose cryogels for biomedicine.

Main Methods:

• Cellulose dissolution in suitable solvents.
• Regeneration (coagulation) and solvent removal.
• Freezing and subsequent freeze-drying to preserve microstructure.

Main Results:

• Cryogel properties are influenced by cellulose origin, solvent, and processing parameters.
• Freeze-drying is crucial for preserving micro- and nanostructures.
• Adjustable parameters allow tailoring cryogel morphology and characteristics.

Conclusions:

• Cellulose cryogels are versatile biomaterials produced via cryogelation and freeze-drying.
• They show potential in wound healing, tissue regeneration (cartilage, bone, nerves), and drug delivery.
• Further research can optimize their application in regenerative medicine.