Aromatic Polymethacrylates from Lignin-Based Feedstock: Synthesis, Thermal Properties, Life-Cycle Assessment and Toxicity

Rauno Sedrik, Olivier Bonjour, Nariê Rinke Dias de Souza, Alina Ismagilova, Iris Tamsalu, Veljo Kisand;, Francesco Cherubini, Patric Jannasch, Lauri Vares

Research output: Contribution to journalArticlepeer-review

Abstract

There is currently a great need for rigid, high-performance and processable bio-based polymers and plastics as alternatives to the fossil-based materials used today. Here, we report on the straightforward synthesis and polymerization of lignin-derived methacrylate monomers based on the methyl esters of syringic, vanillic, and 4-hydroxybenzoic acid, respectively. The corresponding homopolymethacrylates exhibit high glass transition temperatures (Tgs) at 106, 128, and 197 °C, respectively. Rheological properties and thermal stability up to at least 277 °C indicate that these polymers are melt-processable. In addition, copolymers with methyl methacrylate are prepared to further vary and tune the polymer properties. An integrated ex-ante and prospective life-cycle assessment of key environmental impact parameters indicates similar or only slightly higher values compared to well-established fossil-based methyl methacrylate. Moreover, the toxicity towards human HeLa cell lines compares well with that of poly(methyl methacrylate). Hence, the potential availability of lignin-derived acids, combined with the straightforward and potentially upscalable monomer synthesis, make these rigid polymers appealing alternatives towards bio-based high-Tg thermoplastic materials with low toxicity.
Original languageEnglish
Article numbere202401239
JournalChemSusChem
Volume18
Issue number2
Early online date2024
DOIs
Publication statusPublished - 2025

Subject classification (UKÄ)

  • Polymer Technologies
  • Polymer Chemistry
  • Materials Chemistry

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