keywords: Carbohydrate, 5-hydroxymethylfuran, 2,5-FDCA, polymers
2,5-furandicarboxylic acid (FDCA) and 2,5-bis-(hydroxymethyl)furan (BHMF) were synthesised as monomers from bio-based derived 5-Hydroxymethylfuran (5-HMF). The aldehyde group of 5-HMF was oxidized using potassium permanganate to FDCA with 80% yield and BHMF was synthesised from 5-HMF using sodium borohydride at 88% yield. Polymerization of FDCA with the following diols: 1,4-butanediol, 1,6-hexanediol, 1,8-octanediol and BHMF via esterification reactions at 160-200oC using titanium (IV) n-butoxide catalyst. All these diols produced hydrophobic polymers under the same conditions with PBH-2,5-F more hydrophobic with a contact angle of 91o. The differences within this family of polymers are the number of carbon atoms in the linking diols and that BHMF had a different diol structure with a furan ring attached.
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