ADMET polymerization of bio-based biphenyl compounds

Abstract : Four biphenyl monomers derived from vanillin or eugenol were synthesized and polymerized by the ADMET methodology. The biphenyl compounds were produced by enzymatic dimerization of 2-methoxy-4-methylphenol, methyl vanillate, vanillin and eugenol. Further chemical modifications of the obtained dimers such as transesterification, Wittig reaction or allylation led to a,.-dienes. The reactivity of these bio-based monomers towards ADMET polymerization employing several catalysts was investigated. Only oligomers were obtained when the diallylated compound was employed. The polymers based on dieugenol and the bis-unsaturated diester exhibit good thermal stability and T-g at 17 and 54 degrees C, respectively. Polymerization of the divinyl compound obtained by the Wittig reaction of divanillin showed a reasonable molar mass of 30 000 g mol(-1), a high T-g at around 160 degrees C and thermostability with a 5% weight loss occurring at 380 degrees C.
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Submitted on : Wednesday, September 14, 2016 - 9:52:25 AM
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Audrey Llevot, Etienne Grau, Stéphane Carlotti, Stéphane Grelier, Henri Cramail. ADMET polymerization of bio-based biphenyl compounds . Polymer Chemistry, Royal Society of Chemistry - RSC, 2015, 6 (44), pp.7693-7700. ⟨10.1039/c5py01232e⟩. ⟨hal-01366055⟩

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