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Solution casting of cellulose acetate films: influence of surface substrate and humidity on wettability, morphology and optical properties

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dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.institutoUC3M. Instituto Tecnológico de Química y Materiales Álvaro Alonso Barbaes
dc.contributor.authorKramar, Ana
dc.contributor.authorRodriguez Ortega, Irene
dc.contributor.authorGonzalez Gaitano, Gustavo
dc.contributor.authorGonzález Benito, Francisco Javier
dc.contributor.funderEuropean Commissionen
dc.contributor.funderMinisterio de Ciencia e Innovación (España)es
dc.contributor.funderUniversidad Carlos III de Madrides
dc.date.accessioned2023-09-26T11:18:26Z
dc.date.available2023-09-26T11:18:26Z
dc.date.issued2023-01-09
dc.description.abstractVariations on the processing conditions of conventional methods for polymeric film preparation may allow tuning certain properties. In this work, different casting surfaces and humidity are presented as variables to consider for cellulose acetate (CA) film preparation using conventional solution casting method. Specifically, borosilicate glass, soda-lime glass and Teflon (PTFE) dishes have been used for casting and their influence on various properties on CA films assessed. The surfaces of glass dishes are smooth, while PTFE surface has a pattern constituted by concentric channels of micro dimensions (as seen by optical microscope), which is adopted by cast films upon drying. The resulting patterned films are translucent while films produced using smooth surfaces are transparent. The effect of the environment humidity (35%, 55% and 75% RH) in the properties of the CA films during the evaporation of solvent from solution has been evaluated. Higher humidity produces smoother surfaces and increased crystallinity as shown by XRD and DSC; however, the wettability of the films does not seem to be influenced by this variable. Due to the specific morphology of the patterned films, changes in material opacity upon wetting are detected, from translucent to transparent, while the removal of water from the surface restores the translucency. This micropatterning effect that causes different visual appearance of the material can find use as a humidity sensor in food packaging applications.en
dc.description.sponsorshipOpen Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This work was financially supported by CONEX-Plus program of Universidad Carlos III de Madrid (UC3M) and the European Commission through the Marie-Sklodowska Curie COFUND Action (Grant Agreement No 801538). Authors also appreciate the financial support received from AEI (Ministerio de Ciencia e Innovación of Spain, PID2020-112713RB-C22 and -C21); the Universidad Carlos III de Madrid, Fondos de Investigación of Fco. Javier González Benito (2012/00130/004) and the strategic Action in Multifunctional Nanocomposite Materials (2011/00287/003).en
dc.format.extent16es
dc.identifier.bibliographicCitationKramar, A., Ortega, I. R., González‐Gaitano, G., & González‐Benito, J. (2023). Solution casting of cellulose acetate films: Influence of surface substrate and humidity on wettability, morphology and optical properties. Cellulose, 30(4), 2037-2052.en
dc.identifier.doihttps://doi.org/10.1007/s10570-022-05026-2
dc.identifier.issn0969-0239
dc.identifier.publicationfirstpage2037es
dc.identifier.publicationlastpage2052es
dc.identifier.publicationtitleCelluloseen
dc.identifier.publicationvolume30es
dc.identifier.urihttps://hdl.handle.net/10016/38446
dc.identifier.uxxiAR/0000033390
dc.language.isoengen
dc.publisherSpringeren
dc.relation.projectIDAT-2022es
dc.relation.projectIDGobierno de España. PID2020-112713RB-C21es
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/COFUND-GA-2017-801538es
dc.relation.projectIDGobierno de España. PID2020-112713RB-C22es
dc.rights© The Author(s) 2023en
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaIngeniería Industriales
dc.subject.ecienciaMaterialeses
dc.subject.ecienciaQuímicaes
dc.subject.otherFilmsen
dc.subject.otherMorphologyen
dc.subject.otherCrystallinityen
dc.subject.otherMicropatterningen
dc.subject.otherCellulose acetateen
dc.subject.otherSolution castingen
dc.titleSolution casting of cellulose acetate films: influence of surface substrate and humidity on wettability, morphology and optical propertiesen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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