Distilled pyroligneous liquor obtained from Eucalyptus grandis and chitosan : physicochemical properties of the solution and films
dc.contributor.author | Porto, Fabiane Grecco da Silva | pt_BR |
dc.contributor.author | Campos, Angela Diniz | pt_BR |
dc.contributor.author | Garcia, Irene Teresinha Santos | pt_BR |
dc.date.accessioned | 2020-01-31T04:13:12Z | pt_BR |
dc.date.issued | 2019 | pt_BR |
dc.identifier.issn | 0944-1344 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/205229 | pt_BR |
dc.description.abstract | The 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.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Environmental Science and Pollution Research. Alemanha. Vol. 26, no. 1 (Jan. 2019), p. 672-683 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Protective coating | en |
dc.subject | Licor pirolíneo destilado | pt_BR |
dc.subject | Distilled pyroligneous liquor | en |
dc.subject | Eucalyptus grandis | pt_BR |
dc.subject | Eucalyptus grandis | en |
dc.subject | Quitosana | pt_BR |
dc.subject | Sistemas coloidais | pt_BR |
dc.subject | Chitosan | en |
dc.subject | Colloidal systems | en |
dc.subject | Radiação ultravioleta | pt_BR |
dc.subject | Ultraviolet radiation | en |
dc.title | Distilled pyroligneous liquor obtained from Eucalyptus grandis and chitosan : physicochemical properties of the solution and films | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001106984 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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