Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/46914
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dc.contributor.authorBergamasco, Sarait
dc.contributor.authorTamantini, Swatiit
dc.contributor.authorZikeli, Florianit
dc.contributor.authorVinciguerra, Vittorioit
dc.contributor.authorScarascia Mugnozza, Giuseppeit
dc.contributor.authorRomagnoli, Manuelait
dc.date.accessioned2022-02-21T21:51:51Z-
dc.date.available2022-02-21T21:51:51Z-
dc.date.issued2022it
dc.identifier.issn2073-4360it
dc.identifier.urihttp://hdl.handle.net/2067/46914-
dc.description.abstractThree different formulations of bio-based polyurethane (PU), varying the weight ratio between Organosolv lignin and a commercial isocyanate, were synthesized. The coating formulations were characterized by SEM, pyrolysis-GC/MS, FTIR spectroscopy and FTIR mapping, which confirmed the successful formation of urethane bonds between commercial isocyanate and hydroxyl groups deriving from lignin. The coatings were applied on beech wood samples to measure color and contact angles, and eventually FTIR mapping of the coated wood samples was performed. FTIR mapping is an interesting tool to monitor the distribution of PU chemical bonds on the coating surface and to evaluate the homogeneity of the applied coating films. Increasing the lignin content of the PU coatings results in more red-yellow and darker tones, while the commercial PU coating is transparent. For a higher lignin concentration, the solid content as well as the weight gain of the applied coatings increase. A higher percentage of lignin in the prepared PU formulations leads to superficial cracks and therefore higher coating permeability compared to the commercial PU, but the prepared lignin-based PU coating still makes a raw wood surface significantly more hydrophobic. Apparently, additives such as film-formers with low surface tension to counteract cracks' formation are necessary to improve the performance of lignin-based PU coatings.it
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/*
dc.titleSynthesis and Characterizations of Eco-Friendly Organosolv Lignin-Based Polyurethane Coating Films for the Coating Industryit
dc.typearticle*
dc.identifier.doi10.3390/polym14030416it
dc.identifier.pmid35160406it
dc.identifier.scopus2-s2.0-85123199388it
dc.identifier.urlhttps://api.elsevier.com/content/abstract/scopus_id/85123199388it
dc.relation.journalPOLYMERSit
dc.relation.firstpage1it
dc.relation.lastpage15it
dc.relation.numberofpages15it
dc.relation.volume14it
dc.relation.issue3it
dc.subject.scientificsectorAGR/06 Tecnologia del legno e Utilizzazioni Forestaliit
dc.subject.keywordswood coating; wood color; contact angle; SEM; Py-GC/MS; FTIR mapping; beech; bio-circular economyit
dc.subject.ercsectorLS9-4it
dc.description.numberofauthors6it
dc.description.internationalnoit
dc.contributor.countryITAit
dc.type.miur262*
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
item.openairetypearticle-
item.cerifentitytypePublications-
crisitem.journal.journalissn2073-4360-
crisitem.journal.anceE204149-
Appears in Collections:A1. Articolo in rivista
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