Two symmetrical biphenyl monomers derived from vanillin, a methylated divanillyl diol and a methylated dimethylvanillate dimer, were synthesized and employed as (co)monomers for the design of renewable (semi)aromatic polyesters. The reactivity in polytransesterification of these new monomers was investigated in bulk in the presence of various catalysts. The polytransesterification between methylated divanillyl diol and a series of bio-based diesters having different chemical structures led to amorphous thermoplastic polyesters with glass transition temperatures ranging from −5 to 139 °C and thermal stability up to 350 °C.< Leer menos

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P-HYDROXYBENZOIC ACID

FERULIC ACID

2 5-FURANDICARBOXYLIC ACID

THERMOTROPIC POLYESTERS

THERMAL PROPERTIES

COPOLYESTERS

MONOMERS

POLY(ETHYLENE-TEREPHTHALATE) DERIVATIVES

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Renewable (semi)aromatic polyesters from symmetrical vanillin-based dimers

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