{
  "abstract": "The direct transesterification of cellulose with vinyl laurate (VL) was investigated in the DMSO–DBU–CO2 switchable solvent system and subsequently translated to reactive extrusion (R-EX) under high-solid conditions, offering a simple and catalyst-free route for the preparation of long-chain cellulose esters. In a homogeneous medium, degree of substitution (DS) was tuned by varying the anhydroglucose unit (AGU):VL molar ratio (1:1–1:5). FTIR and NMR confirmed progressive hydroxyl substitution, with DS increasing with VL feed. The resulting cellulose laurates showed enhanced thermal stability and hydrophobicity, while higher DS reduced stiffness and increased flexibility due to internal plasticization by lauryl side chains. To overcome the inherent limitations of batch processes─namely, low cellulose concentration and long reaction times─the system was successfully extended to R-EX up to 22 wt % cellulose. Under these conditions, transesterification proceeded rapidly at moderate temperatures, yielding transparent, ductile, and hydrophobic films with DS comparable to those obtained in solution. A DOZN green-chemistry assessment of the esterification step showed that R-EX reduced the DOZN score by nearly 60% compared with the batch protocol. This study demonstrates that the DMSO–DBU–CO2 medium constitutes a solvent-lean platform for the sustainable preparation of cellulose esters. Its integration with R-EX provides a process-intensified route toward high-performance, biobased materials with tunable mechanical and surface properties.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "name": "Mohamed Aouay"
    },
    {
      "name": "Thomas Vidil"
    },
    {
      "name": "Adèle Gapin"
    },
    {
      "name": "Eric Cloutet"
    },
    {
      "name": "Sylvain Chambon"
    },
    {
      "name": "Stéphane Grelier"
    },
    {
      "name": "Henri Cramail"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bhft544ya56hm.bib",
  "cited_by": 0,
  "doi": "10.1021/acsapm.6c02064",
  "fulltext_url": null,
  "id": "bhft544ya56hm",
  "issns": [
    "2637-6105"
  ],
  "landing_url": "https://hal.science/hal-05739288v1",
  "language": "en",
  "licence": "CC-BY-NC-SA-4.0",
  "licence_label": "CC BY-NC-SA 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-sa/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "hal",
      "1.chim.poly"
    ],
    [
      "openalex",
      "2502|Advanced Cellulose Research Studies"
    ]
  ],
  "openalex": "W7204992484",
  "pdf_url": "https://hal.science/hal-05739288/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-29",
  "publisher": "American Chemical Society",
  "ris": "https://research.draconitic.com/paper/bhft544ya56hm.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:29Z",
      "native_id": "hal-05739288",
      "source": "hal",
      "url": "https://hal.science/hal-05739288v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "hal:1.chim.poly",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Cellulose Ester Films Preparation in a DBU–CO2 Switchable Solvent: From Batch Synthesis to Reactive Extrusion at High-Solid Content",
  "title_text": "Cellulose Ester Films Preparation in a DBU–CO2 Switchable Solvent: From Batch Synthesis to Reactive Extrusion at High-Solid Content",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:29Z",
  "url": "https://research.draconitic.com/paper/bhft544ya56hm",
  "venue": "ACS Applied Polymer Materials",
  "versions": []
}