Composite Films with UV-Barrier Properties Based on Bacterial Cellulose Combined with Chitosan and Poly(vinyl alcohol): Study of Puncture and Water Interaction Properties

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dc.contributor.affiliationUniversidade de Santiago de Compostela. Departamento de Química Analítica, Nutrición e Bromatoloxía
dc.contributor.authorCazón Díaz, Patricia
dc.contributor.authorVázquez Vázquez, Manuel
dc.contributor.authorVelázquez, Gonzalo
dc.date.accessioned2025-01-12T12:47:28Z
dc.date.available2025-01-12T12:47:28Z
dc.date.issued2019-03-29
dc.descriptionThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Biomacromolecules, copyright © 2019 American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.biomac.9b00317
dc.description.abstractThe present study describes the preparation and characterization of composite films from bacterial cellulose produced by Komagataeibacter xylinus combined with poly(vinyl alcohol) and chitosan. The unique bacterial cellulose structure provides an expanded surface area with high porosity, easing the combination with other soluble polymers by dipping. This blending method effectively reinforces the bacterial cellulose structure. Toughness, puncture strength, water solubility, and swelling degree were measured to assess the effect of poly(vinyl alcohol) and chitosan on the analyzed properties. The morphology and optical and thermal properties were evaluated by scanning electron microscopy, UV–vis spectral analysis, thermogravimetry, and differential scanning calorimetry, respectively. Results showed that the films have good UV-barrier properties and high thermal stability. Toughness values ranged from 0.26 to 7.18 MJ/m3, burst strength ranged from 58.88 to 3234.62 g, and distance to burst ranged from 0.39 to 3.24 mm. Poly(vinyl alcohol) affected the water solubility and increased the swelling degree.
dc.description.peerreviewedSI
dc.description.sponsorshipA grant from CONACYT (Mexico) to P.C. (no. 435948) is gratefully acknowledged. The financial support for this project was provided by Consellería de Cultura, Educación e Ordenación Universitaria, Xunta de Galicia (ES) (project no. ED431B 2016/009). We acknowledge the use of RIAIDT-USC analytical facilities.
dc.identifier.citationCazón, P., Vázquez, M. and Velazquez, G. (2019) ‘Composite films with UV-barrier properties based on bacterial cellulose combined with chitosan and poly(vinyl alcohol): Study of puncture and water interaction properties’, Biomacromolecules, 20(5), pp. 2084–2095. doi:10.1021/acs.biomac.9b00317.
dc.identifier.doi10.1021/acs.biomac.9b00317
dc.identifier.essn1526-4602
dc.identifier.issn1525-7797
dc.identifier.urihttps://hdl.handle.net/10347/38514
dc.issue.number5
dc.journal.titleBiomacromolecules
dc.language.isoeng
dc.page.final2095
dc.page.initial2084
dc.publisherACS Publications
dc.relation.publisherversionhttps://doi.org/10.1021/acs.biomac.9b00317
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 International
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.subjectBiopolymers
dc.subjectCellulose Optical properties Polymers Solubility
dc.subjectCellulose
dc.subjectOptical properties
dc.subjectPolymers
dc.subjectSolubility
dc.titleComposite Films with UV-Barrier Properties Based on Bacterial Cellulose Combined with Chitosan and Poly(vinyl alcohol): Study of Puncture and Water Interaction Properties
dc.typejournal article
dc.type.hasVersionAM
dc.volume.number20
dspace.entity.typePublication
relation.isAuthorOfPublication13af2b61-8029-43fd-94ef-355feb204611
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relation.isAuthorOfPublication.latestForDiscoveryfc76d3a0-34d0-430c-80f5-4c429aaaa1b6

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