New bio-based monomers: tuneable polyester properties using branched diols from biomass.

Area of Science:

• Polymer Chemistry
• Green Chemistry
• Materials Science

Background:

• Biomass-derived platform molecules offer sustainable alternatives to petrochemical feedstocks.
• 5-(chloromethyl)furfural (CMF) is a versatile platform molecule for synthesizing various monomers.
• Novel polyesters can be developed using less common diol monomers and bio-based diacids.

Purpose of the Study:

• To synthesize novel polyesters from biomass-derived monomers.
• To investigate the impact of diol structure (primary vs. secondary, chain length) on polymer properties.
• To explore polymerization methods and potential applications in low surface energy materials.

Main Methods:

• Monomer synthesis from 5-(chloromethyl)furfural (CMF).
• Polyester synthesis using diacid chlorides or transesterification.
• Characterization of polymer properties, including glass transition temperature (T_g) and molecular weight.

Main Results:

• Polyesters derived from secondary diols exhibited higher glass transition temperatures compared to those from primary diols.
• Longer chain diols demonstrated increased reactivity, leading to higher molecular weight polymers, especially with transesterification.
• Novel branched diesters were synthesized as potential monomers for low surface energy materials.

Conclusions:

• Biomass-derived monomers, particularly novel diols, can be effectively polymerized into polyesters with tunable properties.
• Secondary diols and longer chain diols offer advantages in achieving higher T_g and molecular weights.
• The developed polyesters show promise for applications requiring specific thermal and surface properties, contributing to sustainable materials development.