title: Furan-modified natural rubber: A substrate for its reversible crosslinking and for clicking it onto nanocellulose.
abstract: The conventional vulcanization process applied to elastomers is irreversible and hinders therefore their useful recycling. We demonstrate here that natural rubber can be reversibly crosslinked via the Diels-Alder coupling of furan and maleimide moieties. The furan-modified natural rubber used in this strategy was also exploited to bind it to maleimide-modified nanocellulose, thus generating a covalently crosslinked composite of these two renewable polymers.
authors.affiliation: São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São-carlense, 400, CEP 13566-590, São Carlos, SP, Brazil. Electronic address: elianetrov@yahoo.com.br.
authors.forename: Eliane
authors.initials: E
authors.lastname: Trovatti
authors.affiliation: Wallenberg Wood Science Center, Royal Institute of Technology, Stockholm, Sweden.
authors.forename: Ana Gisela
authors.initials: AG
authors.lastname: Cunha
authors.affiliation: Department of Materials Engineering, São Carlos School of Engineering, University of São Paulo, Av. João Dagnone 1100, CEP 13563-120, São Carlos, SP, Brazil.
authors.forename: Antonio J F
authors.initials: AJ
authors.lastname: Carvalho
authors.affiliation: São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São-carlense, 400, CEP 13566-590, São Carlos, SP, Brazil; Department of Materials Engineering, São Carlos School of Engineering, University of São Paulo, Av. João Dagnone 1100, CEP 13563-120, São Carlos, SP, Brazil.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Gandini
mesh_terms: D001688:Biological Products / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*; D003497:Cyclic N-Oxides / Q000737:chemistry; D020724:Elastomers / Q000737:chemistry; D005663:Furans / Q000737:chemistry*; D008301:Maleimides / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry*; D010084:Oxidation-Reduction; D012408:Rubber / Q000737:chemistry*; D013696:Temperature
chemical_list: D001688:Biological Products; D003497:Cyclic N-Oxides; D020724:Elastomers; D005663:Furans; D008301:Maleimides; C043592:maleimide; D002482:Cellulose; D012408:Rubber; C039281:furan; C003959:TEMPO
keywords: Aminomaleimide; Diels-Alder reaction; Furans; Recycling; TEMPO-oxidized nanocellulose; Thermal reversibility