title: Biopolymer-based nanocomposites: effect of lignin acetylation in cellulose triacetate films.
abstract: We have prepared all-biopolymer nanocomposite films using lignin as a filler and cellulose triacetate (CTA) as a polymer matrix, and characterized them by several analytical methods. Three types of lignin were tested: organosolv, hydrolytic and kraft, with or without acetylation. They were used in the form of nanoparticles incorporated at 1 wt% in CTA. Self-supported films were prepared by vapor-induced phase separation at controlled temperature (35-55 °C) and relative humidity (10-70%). The efficiency of acetylation of each type of lignin was studied and discussed, as well as its effects on film structure, homogeneity and mechanical properties. The obtained results are explained in terms of intermolecular filler-matrix interaction at the nanometer scale, for which the highest mechanical resistance was reached using hydrolytic lignin in the nanocomposite.
authors.affiliation: Centro de Investigación en Materiales Avanzados, S.C., Laboratorio Nacional de Nanotecnología, Miguel de Cervantes No. 120, Chihuahua, Chih., 31109, Mexico.
authors.forename: Laura Alicia Manjarrez
authors.initials: LA
authors.lastname: Nevárez
authors.affiliation: Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitario s/n, Campus Universitario No. 2, C.P. 31125, Chihuahua, Chih., Mexico.
authors.forename: Lourdes Ballinas
authors.initials: LB
authors.lastname: Casarrubias
authors.affiliation: Institut Jean Lamour-UMR CNRS 7198, CNRS-Nancy-Université-UPVM, ENSTIB, 27 rue du Merle Blanc, BP 1041, 88051 Epinal Cedex 9, France.
authors.forename: Alain
authors.initials: A
authors.lastname: Celzard
authors.affiliation: Institut Jean Lamour-UMR CNRS 7198, CNRS-Nancy-Université-UPVM, ENSTIB, 27 rue du Merle Blanc, BP 1041, 88051 Epinal Cedex 9, France.
authors.forename: Vanessa
authors.initials: V
authors.lastname: Fierro
authors.affiliation: Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitario s/n, Campus Universitario No. 2, C.P. 31125, Chihuahua, Chih., Mexico.
authors.forename: Vinicio Torres
authors.initials: VT
authors.lastname: Muñoz
authors.affiliation: Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitario s/n, Campus Universitario No. 2, C.P. 31125, Chihuahua, Chih., Mexico.
authors.forename: Alejandro Camacho
authors.initials: AC
authors.lastname: Davila
authors.affiliation: Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna 140, Saltillo, 25100, Coahuila, Mexico.
authors.forename: José Román Torres
authors.initials: JR
authors.lastname: Lubian
authors.affiliation: Centro de Investigación en Materiales Avanzados, S.C., Laboratorio Nacional de Nanotecnología, Miguel de Cervantes No. 120, Chihuahua, Chih., 31109, Mexico.
authors.forename: Guillermo González
authors.initials: GG
authors.lastname: Sánchez
keywords: biopolymer; lignin; nanocomposites; self-supported films