Furfuryl Alcohol and Lactic Acid Blends: Homo- or Co-Polymerization?

Area of Science:

• Green Chemistry
• Polymer Science
• Biomaterials

Background:

• Furfuryl alcohol (FA) and lactic acid (LA) are readily available biomolecules from sugars, ideal for sustainable chemistry.
• While typically undergoing homopolymerization, their copolymerization offers potential for new material properties.
• Controlled polymerization of FA, previously challenging, enables its use in copolymer systems.

Purpose of the Study:

• To investigate the controlled copolymerization of furfuryl alcohol (FA) and lactic acid (LA).
• To characterize the properties of the resulting FA-LA copolymers.
• To explore the potential of these copolymers as sustainable bioplastics.

Main Methods:

• Controlled exothermic polymerization of FA and LA mixture.
• Mechanical testing of the resulting copolymer blends.
• Chemical and thermal analysis using FT-IR, ¹³C-NMR, TG, and DSC.

Main Results:

• FA-LA blends with low FA content exhibited increased rigidity and PFA-like fracture patterns.
• LA-rich blends demonstrated improved resistance to chloroform and water.
• Thermal analyses indicated a significant furanic character, and NMR confirmed ester linkages, suggesting copolymer formation.

Conclusions:

• Controlled copolymerization of FA and LA is feasible, yielding materials with enhanced properties.
• The bioplastics consist mainly of PLA and PFA homopolymers with some covalent linkages.
• These findings highlight the potential of FA-LA copolymers for developing advanced, sustainable materials.