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dc.contributor.authorPorto, Fabiane Grecco da Silvapt_BR
dc.contributor.authorCampos, Angela Dinizpt_BR
dc.contributor.authorGarcia, Irene Teresinha Santospt_BR
dc.date.accessioned2020-01-31T04:13:12Zpt_BR
dc.date.issued2019pt_BR
dc.identifier.issn0944-1344pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/205229pt_BR
dc.description.abstractThe pyroligneous liquor is a product obtained during the production of charcoal, with well-known antimicrobial activity. In this work, we characterized the physical chemistry properties of a formulation composed of distilled pyroligneous liquor (DPL), obtained from Eucalyptus grandis, and chitosan. A good interaction between the polymer and the solvent was observed. Auto-supported films were prepared with these systems and characterized with respect to their structure and photo-protection properties, water vapor permeability, and resistance to water and to thermal degradation. They present a semi-crystalline structure and are hygroscopic, but are stable under immersion for up to 7 days. The swelling degree in water is 300% in weight and the permeability to water vapor was between 30 and 45 gm−1 h−1 (for films with 80 to 10 μm, respectively). The obtained films are able to efficiently block the incident UVB and UVC radiation; the molar absorptivity decreases exponentially with increasing wavelength and is stable up to 300 °C. These properties confer desirable properties to the films, obtained from these precursors of a renewable source, to be used as coatings.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofEnvironmental Science and Pollution Research. Alemanha. Vol. 26, no. 1 (Jan. 2019), p. 672-683pt_BR
dc.rightsOpen Accessen
dc.subjectProtective coatingen
dc.subjectLicor pirolíneo destiladopt_BR
dc.subjectDistilled pyroligneous liquoren
dc.subjectEucalyptus grandispt_BR
dc.subjectEucalyptus grandisen
dc.subjectQuitosanapt_BR
dc.subjectSistemas coloidaispt_BR
dc.subjectChitosanen
dc.subjectColloidal systemsen
dc.subjectRadiação ultravioletapt_BR
dc.subjectUltraviolet radiationen
dc.titleDistilled pyroligneous liquor obtained from Eucalyptus grandis and chitosan : physicochemical properties of the solution and filmspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001106984pt_BR
dc.type.originEstrangeiropt_BR


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