title: Bioinspired lignocellulosic films to understand the mechanical properties of lignified plant cell walls at nanoscale.
abstract: The physicochemical properties of plant fibres are determined by the fibre morphology and structural features of the cell wall, which is composed of three main layers that differ in chemical composition and architecture. This composition and hierarchical structure are responsible for many of the mechanical properties that are desirable for industrial applications. As interactions between the lignocellulosic polymers at the molecular level are the main factor governing the final cohesion and mechanical properties of plant fibres, atomic force microscopy (AFM) is well suited for the observation and measurement of their physical properties at nanoscale levels. Given the complexity of plant cell walls, we have developed a strategy based on lignocellulosic assemblies with increasing complexity to understand the influence of the different polymers on the nanomechanical properties. Measurements of the indentation moduli performed on one type of lignified cell wall compared with those performed on the corresponding lignocellulosic films clearly show the importance of the lignin in the mechanical properties of cell walls. Through this strategy, we envision a wide application of bioinspired systems in future studies of the physical properties of fibres.
authors.affiliation: FARE laboratory, INRA, Université de Reims Champagne-Ardenne, 51100, Reims, France.|Université de Reims-Champagne Ardenne, Laboratoire de Recherche en Nanosciences EA4682 F-51100 Reims, France.
authors.forename: L
authors.initials: L
authors.lastname: Muraille
authors.affiliation: FARE laboratory, INRA, Université de Reims Champagne-Ardenne, 51100, Reims, France.
authors.forename: V
authors.initials: V
authors.lastname: Aguié-Béghin
authors.affiliation: FARE laboratory, INRA, Université de Reims Champagne-Ardenne, 51100, Reims, France.
authors.forename: B
authors.initials: B
authors.lastname: Chabbert
authors.affiliation: Université de Reims-Champagne Ardenne, Laboratoire de Recherche en Nanosciences EA4682 F-51100 Reims, France.
authors.forename: M
authors.initials: M
authors.lastname: Molinari
mesh_terms: D002473:Cell Wall / Q000737:chemistry*; D008031:Lignin / Q000737:chemistry*; D008567:Membranes, Artificial; D059828:Plant Cells / Q000737:chemistry*; D032107:Populus / Q000737:chemistry* / Q000166:cytology
chemical_list: D008567:Membranes, Artificial; C036909:lignocellulose; D008031:Lignin