title: Processing and properties of eco-friendly bio-nanocomposite films filled with cellulose nanocrystals from sugarcane bagasse.
abstract: Novel synthesis strategy of eco-friendly bio-nanocomposite films have been exploited using cellulose nanocrystals (CNC) and polyvinyl alcohol/carboxymethyl cellulose (PVA/CMC) blend matrix as a potential in food packaging application. The CNC were extracted from sugarcane bagasse using sulfuric acid hydrolysis, and they were successfully characterized regarding their morphology, size, crystallinity and thermal stability. Thereafter, PVA/CMC-CNC bio-nanocomposite films, at various CNC contents (0.5-10wt%), were fabricated by the solvent casting method, and their properties were investigated. It was found that the addition of 5wt% CNC within a PVA/CMC increased the tensile modulus and strength by 141% and 83% respectively, and the water vapor permeability was reduced by 87%. Additionally, the bio-nanocomposites maintained the same transparency level of the PVA/CMC blend film (transmittance of ∼90% in the visible region), suggesting that the CNC were dispersed at the nanoscale. In these bio-nanocomposites, the adhesion properties and the large number of functional groups that are present in the CNC's surface and the macromolecular chains of the PVA/CMC blend are exploited to improve the interfacial interactions between the CNC and the blend. Consequently, these eco-friendly structured bio-nanocomposites with superior properties are expected to be useful in food packaging applications.
authors.affiliation: Center for Advanced Materials, Mohammed VI Polytechnic University, Lot 660-Hay Moulay Rachid, 43150 Benguerir, Morocco. Electronic address: mounir.elachaby@um6p.ma.
authors.forename: Mounir
authors.initials: M
authors.lastname: El Achaby
authors.affiliation: Moroccan Foundation for Advanced Science Innovation and Research (MAScIR), Rabat Design, Rue Mohamed El Jazouli, Madinat El Irfane 10100-Rabat, Morocco.
authors.forename: Nassima
authors.initials: N
authors.lastname: El Miri
authors.affiliation: Laboratoire Interdisciplinaire de Recherche en Sciences et Techniques, Faculté polydisciplinaire de Béni-Mellal, Université Sultan Moulay Slimane, BP 592, 23000 Béni-Mellal, Morocco.
authors.forename: Adil
authors.initials: A
authors.lastname: Aboulkas
authors.affiliation: Moroccan Foundation for Advanced Science Innovation and Research (MAScIR), Rabat Design, Rue Mohamed El Jazouli, Madinat El Irfane 10100-Rabat, Morocco.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Zahouily
authors.affiliation: R&D OCP, OCP Group, Complexe industriel Jorf Lasfar, BP 118 El Jadida, Morocco.
authors.forename: Essaid
authors.initials: E
authors.lastname: Bilal
authors.affiliation: IATE, CIRAD, Montpellier SupAgro, INRA, Université de Montpelier, 34060, Montpellier, France.
authors.forename: Abdellatif
authors.initials: A
authors.lastname: Barakat
authors.affiliation: Center for Advanced Materials, Mohammed VI Polytechnic University, Lot 660-Hay Moulay Rachid, 43150 Benguerir, Morocco.
authors.forename: Abderrahim
authors.initials: A
authors.lastname: Solhy
mesh_terms: D002266:Carboxymethylcellulose Sodium / Q000737:chemistry; D002482:Cellulose / Q000737:chemistry*; D004355:Drug Stability; D055772:Green Chemistry Technology; D006868:Hydrolysis; D053761:Nanocomposites / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D055620:Optical Phenomena; D011142:Polyvinyl Alcohol; D031786:Saccharum / Q000737:chemistry*; D013227:Steam; D013696:Temperature; D013718:Tensile Strength
chemical_list: D013227:Steam; D011142:Polyvinyl Alcohol; D002482:Cellulose; C027433:bagasse; D002266:Carboxymethylcellulose Sodium
keywords: Bio-nanocomposite films; Cellulose nanocrystals; Polymer blend