{
  "abstract": "Biobased thermoplastics offer sustainable alternatives to petrochemical plastics, but controlling polymer stereochemistry to access biobased materials with desirable thermomechanical properties remains a challenge. Here, we report two new semicrystalline thermoplastics synthesized through the stereoselective ring-opening polymerization of the biobased bicyclic lactone (±)-2-oxo-3,8dioxabicyclo[3.2.1]octane (ODO). Enantiopure bisurea catalysts produced highly syndiotactic poly(ODO) (s-PODO) at low temperatures through an unexpected chain-end control mechanism. Yttrium-catalyzed melt polymerizations afforded high-molecular weight isotactic and syndiotactic PODO. The ductility, strength and modulus of PODO thermoplastics can be tuned through changes in tacticity, processing and crystallinity. By controlling their stereoregularity and processing conditions, we show that semicrystalline PODO films can have exceptional gas barrier properties with enhanced strength and modulus relative to amorphous atactic PODO.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Chemistry, Stanford University, 337 Campus Drive, Stanford, California, 94305"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "David M. Dumas"
    },
    {
      "affs": [
        0
      ],
      "name": "Kai Hin Lui",
      "orcid": "0000-0003-4122-0029"
    },
    {
      "affs": [
        0
      ],
      "name": "Hongyi Zhang"
    },
    {
      "affs": [
        0
      ],
      "name": "Matthew W. Kanan"
    },
    {
      "affs": [
        0
      ],
      "name": "Robert M. Waymouth"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/309350qb9x6f2.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15008674/v1",
  "fulltext_url": null,
  "id": "309350qb9x6f2",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008674/v1",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2502|biodegradable polymer synthesis and properties"
    ]
  ],
  "openalex": "W7212285967",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15008674/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-10",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/309350qb9x6f2.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:19Z",
      "native_id": "10.26434/chemrxiv.15008674",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008674/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2502|biodegradable polymer synthesis and properties",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Semicrystalline Polyesters Made by Stereoselective Polymerization of a Biobased Bicyclic Lactone",
  "title_text": "Semicrystalline Polyesters Made by Stereoselective Polymerization of a Biobased Bicyclic Lactone",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:19Z",
  "url": "https://research.draconitic.com/paper/309350qb9x6f2",
  "venue": "ChemRxiv",
  "versions": []
}