Cellulose Fibre-Reinforced Biofoam for Structural Applications

Area of Science:

• Materials Science
• Polymer Chemistry
• Sustainable Materials

Background:

• Traditional foam production relies heavily on petroleum-based polymers.
• The shift towards a bio-economy necessitates renewable feedstock alternatives.
• Soybean oil, a triglyceride-rich vegetable oil, presents a viable renewable resource for material development.

Purpose of the Study:

• To investigate the production of bio-based foams using acrylated epoxidized soybean oil and cellulose fibers.
• To characterize the structural and mechanical properties of the developed macroporous bio-based architectures.
• To evaluate the role of cellulose fibers in the foaming process and foam stabilization.

Main Methods:

• Foam production utilizing acrylated epoxidized soybean oil and varying amounts of cellulose fibers.
• Characterization techniques including porosity measurements, nanoindentation, scanning electron microscopy (SEM), and thermogravimetric analysis (TGA).

Main Results:

• Cellulose fibers were found to be essential for the formation of three-dimensional polymer foams.
• Cellulose fibers acted as both a foam stabilizer by preventing liquid drainage and a reinforcing agent.
• The resulting bio-based foams exhibited approximately 56% porosity.
• SEM revealed randomly oriented pores with irregular shapes and non-uniform sizes.
• The thermal behavior of the foams was not significantly affected by cellulose fiber incorporation.

Conclusions:

• Cellulose fibers are crucial for creating stable, macroporous bio-based foams from soybean oil derivatives.
• The developed foams offer a sustainable alternative with potential applications in various industries.
• Further research can explore optimizing pore structure and mechanical properties through controlled cellulose fiber integration.