Biocompatible Composite Protective Thin Layer Containing Cellulose Fibers and Silica Cryogel

Area of Science:

• Materials Science
• Biomaterials Engineering
• Nanotechnology

Background:

• Developing advanced coatings with enhanced thermal and electrical insulation properties is crucial for various applications.
• Biodegradable and biocompatible materials offer sustainable alternatives in materials science.
• Sol-gel derived silica cryogels present unique structural properties suitable for composite materials.

Purpose of the Study:

• To synthesize protective composite layers from cellulose and silica cryogel.
• To ensure applicability on diverse surfaces (smooth/rough) and materials (metallic/ceramic).
• To enhance mechanical strength, elasticity, and reduce water solubility for insulation coating applications.

Main Methods:

• Synthesis of composite layers using biodegradable cellulose and sol-gel derived silica cryogel.
• Surface treatment techniques including alkaline/acidic etching and mechanical roughening.
• Scanning Electron Microscopy (SEM) for analyzing matrix-reinforcement interactions and morphology.

Main Results:

• Composite layers demonstrated good applicability on various smooth and rough surfaces.
• Removal of alkali content significantly reduced water solubility from 97 wt% to 1-3 wt%.
• Surface treatments (alkaline/acidic etching, roughening, primer) substantially improved adhesion properties.

Conclusions:

• The developed cellulose-silica cryogel composite layers are promising for thermal and electric insulation.
• Surface modification is critical for enhancing the adhesion of these composite coatings.
• The material exhibits reduced water solubility, improving its durability and applicability.