{
  "abstract": "The environmental impact of conventional polymers has driven the search for sustainable food packaging alternatives. Clay incorporation into polymers matrices has shown to enhance optical, mechanical, and barrier properties. This study evaluates Cuban natural bentonite as a reinforcing phase in hydroxypropyl methylcellulose (HPMC), carboxymethylcellulose (CMC), polyvinyl alcohol (PVA), and polyvinylpyrrolidone (PVP), plus their mixtures (PVA/PVP and PVA/CMC). Films were cast and characterized by XRD, ATR-FTIR, SEM, and water resistance tests; opacity was measured by UV-Vis spectroscopy accounting for thickness. Results indicate that polymer dispersion depends on temperature (CMC fastest). Bent/HPMC films stood out for their superior opacity and water resistance, while Bent/PVA/PVP and Bent/PVA/CMC showed predominantly exfoliated structures, favorable for food packaging applications.",
  "abstract_shown": true,
  "affiliations": [
    "Zeolites Engineering Laboratory",
    "Institute of Materials Science and Technology (IMRE), University of Havana",
    "Faculty of Chemistry",
    "University of Havana",
    "Complex Systems, Physics Faculty"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "C. Leal",
      "orcid": "0009-0006-3932-3888"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "D. Hernández",
      "orcid": "0000-0003-0600-913X"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "M. Muñoz-Arias"
    },
    {
      "affs": [
        4,
        3
      ],
      "name": "E. Altshuler",
      "orcid": "0000-0003-4192-5635"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "A. Rivera",
      "orcid": "0000-0002-8579-7850"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ewh43tccgr61j.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15009158/v1",
  "fulltext_url": null,
  "id": "ewh43tccgr61j",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009158/v1",
  "language": null,
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2502|Nanocomposite Films for Food Packaging"
    ]
  ],
  "openalex": "W7213898162",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15009158/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-21",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/ewh43tccgr61j.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:19Z",
      "native_id": "10.26434/chemrxiv.15009158",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009158/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2502|Nanocomposite Films for Food Packaging",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Cuban Bentonite/Polymer Nanocomposites: A Sustainable Alternative for Food Packaging",
  "title_text": "Cuban Bentonite/Polymer Nanocomposites: A Sustainable Alternative for Food Packaging",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:19Z",
  "url": "https://research.draconitic.com/paper/ewh43tccgr61j",
  "venue": "ChemRxiv",
  "versions": []
}