{
  "abstract": "This work aimed to develop an original, biobased, semi-aromatic and UV crosslinked unsaturated polyester, synthesized from a pyridine dicarboxylic acid derivative and an unsaturated aliphatic fatty acid derivative having 18 carbon atoms. A prepolymer with a number average molar mass of 1700 g/mol was synthesized and characterized by FTIR and NMR. This liquid prepolymer was then crosslinked under UV using a biobased compound, 7-mercapto-4-methyl coumarin (MMC), in two concomitant steps: the photografting of MMC onto the prepolymer by thiol-ene addition, and the photodimerization of MMC. The optimized conditions for the photochemical reaction were determined by evaluating the influence of formulation composition (thiol/fatty double bonds ratio from 0.1/1 to 1/1), temperature and irradiation time. In the end, relatively soft coatings (K¨onig hardness: 14.8 ± 0.8 s, Tg = 34 ◦C) were produced after 1 h under UV irradiation at 30 ◦C with 0.1 equivalent of MMC.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "name": "Klara Jastak"
    },
    {
      "name": "Fabrice Burel"
    },
    {
      "name": "Laurence Lecamp"
    },
    {
      "name": "Nicolas Desilles"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3c66sqqbnpdzv.bib",
  "cited_by": 2,
  "doi": "10.1016/j.reactfunctpolym.2025.106166",
  "fulltext_url": null,
  "id": "3c66sqqbnpdzv",
  "issns": [
    "1381-5148",
    "1873-166X"
  ],
  "landing_url": "https://hal.science/hal-05612612v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "openalex",
      "1605|Photopolymerization techniques and applications"
    ]
  ],
  "openalex": "W4406596201",
  "pdf_url": "https://hal.science/hal-05612612/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-08",
  "publisher": "Elsevier",
  "ris": "https://research.draconitic.com/paper/3c66sqqbnpdzv.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:31Z",
      "native_id": "hal-05612612",
      "source": "hal",
      "url": "https://hal.science/hal-05612612v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1605|Photopolymerization techniques and applications",
      "subfield": "organic"
    }
  ],
  "title": "Photocrosslinking of an original biobased and semi-aromatic unsaturated polyester by combined thiol-ene and cycloaddition routes",
  "title_text": "Photocrosslinking of an original biobased and semi-aromatic unsaturated polyester by combined thiol-ene and cycloaddition routes",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:31Z",
  "url": "https://research.draconitic.com/paper/3c66sqqbnpdzv",
  "venue": "Reactive and Functional Polymers",
  "versions": []
}