{
  "abstract": "Poly(vinyl alcohol) (PVA)-based films containing glycerol and quercetin were prepared by casting as potential active-packaging materials. The effects of the glycerol/quercetin ratio on structural, thermal, mechanical, barrier, and antioxidant properties were investigated. Neat PVA and ternary formulations with PVA/glycerol/quercetin ratios of 70/20/10 (PVA+Gly+Q10) and 70/10/20 (PVA+Gly+Q20) by mass were characterized by FTIR, XRD, SEM, contact angle, TGA/DTG, tensile testing, water vapor permeability (WVP), total phenolic content, and DPPH assays. FTIR indicated changes in hydrogen bonding without new covalent functionalities, while apparent whole-film crystallinity indices were 16.2%, 11.1%, and 10.6%, respectively. Tensile tests included additional glycerol-rich and quercetin-rich endpoint controls to characterize the mechanical range of the formulation series. Neat PVA exhibited the highest maximum stress (15.67±1.49 MPa). PVA+Gly+Q20 showed a strain at break of 256.87±115.68% and an apparent tensile modulus of 26.61±3.40 MPa. The glycerol-rich endpoint exhibited high extensibility, whereas the quercetin-rich endpoint showed a markedly higher apparent tensile modulus (404.69±45.72 MPa). DPPH activity increased from 11.18% for PVA to 35.38% and 44.31% for PVA+Gly+Q10 and PVA+Gly+Q20, respectively. PVA+Gly+Q20 also exhibited approximately 68% lower mean WVP than PVA+Gly+Q10, with no significant formulation effect. These results support further development of PVA+Gly+Q20 for active packaging.",
  "abstract_shown": true,
  "affiliations": [
    "Graduate Program in Materials Science and Engineering (PPGCEM), Federal University of Pelotas (UFPel), Pelotas 96010-610, RS, Brazil",
    "Graduate Program in Sciences and Technologies in Education (PPGCITED), Federal Institute of Education, Science and Technology of Rio Grande do Sul (IFSul), Pelotas 96060-290, RS, Brazil",
    "Graduate Program in Electronics and Computer Engineering (MEEC), Catholic University of Pelotas (UCPel), Pelotas 96015-560, RS, Brazil",
    "Graduate Program in Materials Engineering and Science (PPGMAT), University of Caxias do Sul (UCS), Caxias do Sul 95070-560, RS, Brazil",
    "Graduate Program in Materials Science and Engineering (PPCEM), Federal University of Pampa (UNIPAMPA), Bagé 96413-172, RS, Brazil"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 11,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Sarah Kalli Silva da Silva",
      "orcid": "0000-0003-0023-8847"
    },
    {
      "affs": [
        0
      ],
      "name": "Nathalia Vieira Villar de Nunes",
      "orcid": "0009-0000-1978-7817"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Chiara das Dores do Nascimento",
      "orcid": "0000-0001-6028-9852"
    },
    {
      "affs": [
        0
      ],
      "name": "Eduarda Vieira Silva",
      "orcid": "0009-0002-8223-0098"
    },
    {
      "affs": [
        2
      ],
      "name": "Everton Granemann Souza",
      "orcid": "0000-0001-9884-6626"
    },
    {
      "affs": [
        0
      ],
      "name": "Camila Monteiro Cholant",
      "orcid": "0000-0003-2848-1443"
    },
    {
      "affs": [
        0
      ],
      "name": "Ivandra Ignes de Santi",
      "orcid": "0000-0002-7423-2053"
    },
    {
      "affs": [
        0
      ],
      "name": "Amanda Dantas de Oliveira",
      "orcid": "0000-0001-7766-2377"
    },
    {
      "affs": [
        3
      ],
      "name": "Cesar Aguzzoli",
      "orcid": "0000-0001-9122-4461"
    },
    {
      "affs": [
        4
      ],
      "name": "Alexandre Ferreira Galio",
      "orcid": "0000-0001-8477-8378"
    },
    {
      "affs": [
        0
      ],
      "name": "André Luiz Missio",
      "orcid": "0000-0001-9373-6313"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9jgecz9r7dd5p.bib",
  "cited_by": 0,
  "doi": "10.3390/polym18192452",
  "fulltext_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666965/?tool=EBI",
  "id": "9jgecz9r7dd5p",
  "issns": [
    "2073-4360"
  ],
  "landing_url": "https://europepmc.org/article/PMC/PMC13666965",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2502|Nanocomposite Films for Food Packaging"
    ]
  ],
  "openalex": "W7220949799",
  "pdf_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666965/pdf/?tool=EBI",
  "pmcid": "PMC13666965",
  "pmid": null,
  "published": "2026-10-01",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/9jgecz9r7dd5p.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:35Z",
      "native_id": "PMC:PMC13666965",
      "source": "europepmc",
      "url": "https://europepmc.org/article/PMC/PMC13666965"
    },
    {
      "first_seen": "2026-10-30T12:18:44Z",
      "native_id": "10.3390/polym18192452",
      "source": "crossref",
      "url": "https://www.mdpi.com/2073-4360/18/19/2452"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2502|Nanocomposite Films for Food Packaging",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Effects of the Glycerol/Quercetin Ratio on the Structure and Tensile Behavior of PVA-Based Films",
  "title_text": "Effects of the Glycerol/Quercetin Ratio on the Structure and Tensile Behavior of PVA-Based Films",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:44Z",
  "url": "https://research.draconitic.com/paper/9jgecz9r7dd5p",
  "venue": "Polymers",
  "versions": []
}