Synthesis of Biobased Long-Chain Polyesters by Acyclic Diene Metathesis Polymerization and Tandem Hydrogenation and Depolymerization with Ethylene

Kotohiro Nomura; Permpoon Chaijaroen; Mohamed Mehawed Abdellatif

doi:10.1021/acsomega.0c01965

Synthesis of Biobased Long-Chain Polyesters by Acyclic Diene Metathesis Polymerization and Tandem Hydrogenation and Depolymerization with Ethylene

ACS Omega. 2020 Jul 15;5(29):18301-18312. doi: 10.1021/acsomega.0c01965. eCollection 2020 Jul 28.

Authors

Kotohiro Nomura¹, Permpoon Chaijaroen¹, Mohamed Mehawed Abdellatif¹

Affiliation

¹ Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan.

Abstract

Acyclic diene metathesis (ADMET) polymerization of biobased α,ω-dienes of bis(undec-10-enoate) with diols (1,4-butanediol, isosorbide, isomannide, and 1,4-cyclohexanedimethanol) afforded high-molecular weight unsaturated polyesters, and subsequent tandem hydrogenation (H₂ 1.0 MPa, 50 °C, 3 h) gave the saturated polymers upon addition of a small amount of Al₂O₃ (1.0-1.7 wt %). Subsequent reaction of the unsaturated polymers with ethylene afforded the oligomers (by depolymerization and degradation).