Anionic collagen: polymer composites with improved dielectric and rheological properties

Area of Science:

• Materials Science
• Biomaterials Engineering
• Polymer Chemistry

Background:

• Collagen is a vital biomaterial, but its processing and functional properties can be limiting.
• Developing advanced collagen composites is crucial for expanding their applications.
• Understanding macromolecular interactions is key to tailoring composite performance.

Purpose of the Study:

• To prepare and characterize anionic collagen composites with rhamsan and vinylidene fluoride-trifluorethylene.
• To evaluate the impact of these composites on rheological, dielectric, and structural properties.
• To investigate the potential for enhanced functional characteristics, such as pyroelectricity.

Main Methods:

• Preparation of anionic collagen composites using rhamsan and vinylidene fluoride-trifluorethylene.
• Characterization of rheological properties, including extrusion force.
• Analysis of dielectric properties and measurement of pyroelectric coefficients.

Main Results:

• Anionic collagen:rhamsan composites required significantly less force for extrusion (0.088–0.080 J) compared to native collagen (0.189 J).
• Anionic collagen:vinylidene fluoride-trifluorethylene composites showed a high pyroelectric coefficient (1.89 x 10⁻⁴ cm⁻² K⁻¹) at a 1:1 ratio.
• Collagen secondary structure was preserved in the composites, indicating successful macromolecular interaction.

Conclusions:

• Anionic collagen composites with rhamsan and vinylidene fluoride-trifluorethylene offer improved processability and enhanced functional properties.
• The developed composites maintain the structural integrity of collagen while exhibiting superior rheological and dielectric characteristics.
• These findings suggest promising applications for these advanced biomaterials in various technological fields.