Consulta: subjectFacets:"Biocomposite"
Registros recuperados: 4
Data/hora: 10/06/2024 16:05:39

Interfacial bonding of Flax fibre/Poly(L-lactide) bio-composites
Provedor de dados: 5
Autores: Le Duigou, Antoine; Davies, Peter; Baley, Christophe.
The use of glass fibre reinforced polyester composites raises many health and safety and environmental questions. One alternative is the development of high performance bio-based bio-composites with low environmental impact. Improved understanding of interfacial properties is essential to optimise the mechanical properties and durability of these materials, but so far few data are available. The present work describes the interfacial characterization of Flax fibre/Poly(lactic) acid (PLLA) system at the micro-scale using the microbond test. Different thermal treatments have been carried out (cooling rate and annealing) in order to evaluate the influence of matrix and interfacial morphologies as well as residual stress on interfacial properties....
Tipo: Text
Palavras-chave: Flax fibre; Biopolymer; Biocomposite; Interfacial properties; Microbond test.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00000/11161/7808.pdf

Specific features of flax fibres used to manufacture composite materials
Provedor de dados: 5
Autores: Baley, Christophe; Gomina, Moussa; Breard, Joel; Bourmaud, Alain; Drapier, Sylvain; Ferreira, Manuela; Le Duigou, Antoine; Liotier, Pierre Jacques; Ouagne, Pierre; Soulat, Damien; Davies, Peter.
The use of composite materials reinforced by flax fibres has been increasing steadily over the last 20 years. These fibres show attractive mechanical properties but also some particularities (naturally limited length, presence of a lumen, fibres grouped in bundles in the plant, complex surface properties and composition). An analysis of the available literature indicates that the quality of the composite materials studied is not always optimal (high porosity, incomplete impregnation, heterogeneous microstructure, variable fibre orientation). This paper reviews published data on the specific nature of flax fibres with respect to manufacturing of biocomposites (defined here as polymers reinforced by natural fibres). All the important steps in the process...
Tipo: Text
Palavras-chave: Composite materials; Biocomposite; Flax fibre; Polymer; Processing.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00473/58429/61027.pdf

Main criteria of sustainable natural fibre for efficient unidirectional biocomposites
Provedor de dados: 5
Autores: Bourmaud, Alain; Mérotte, Justin; Siniscalco, David; Le Gall, Maelenn; Gager, Victor; Le Duigou, Antoine; Pierre, Floran; Behlouli, Karim; Arnould, Olivier; Beaugrand, Johnny; Baley, Christophe.
This paper investigates biochemical, morphological and mechanical properties of a large range of plant fibres explored with the same methods. Biochemical results clearly exhibit strong differences between gelatinous, i.e. flax and hemp, and xylan type, i.e. jute and kenaf, cell walls. These differences into parietal composition have an impact on cell wall stiffness, highlighted through nanoindentation and atomic force microscopy measurements, but also on fibre individualisation, due to variations into fibre bundles cohesion. In addition, the morphology and particularly the lumen size induces apparent density differences. Moreover, the influence of fibre morphology and properties is demonstrated on UD materials. Finally, longitudinal Young’s modulus of each...
Tipo: Text
Palavras-chave: Natural fibers; Biocomposite; Microstructures; Mechanical properties.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00505/61621/65646.pdf

Effect of Nutrient Sources on the Alginate Accumulation in the Culture Liquid of Azotobacter vinelandii D-05 and Obtaining Biocomposite Materials
Provedor de dados: 52
Autores: Revin,Victor Vasilevich; Kostina,Elena Gennadievna; Revina,Nadezhda Victorovna; Shutova,Vitalina Victorovna.
ABSTRACT Using the classic biotechnological methods, the dependence of A. vinelandii D-05 culture alginate production from the media carbon and nitrogen content was investigated. The maximal alginate production was observed during cultivation bacterium in the medium with 2 to 4% of sucrose, but the maximal growth was found in the medium with 4% glucose. It was found that for the alginate production the optimal nitrogen contents could take from 0.05% yeast extract (carbon: nitrogen ratio 168:1). For the first time we demonstrated possibility the A. vinelandii growth during the cultivation in a medium with molasses (a by-product of sugar production) and the significant polysaccharide production (16.6 g/l) was obtained. It was established, that A. vinelandii...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Azotobacter vinelandii; Alginate; Nutrient medium; Carbon: nitrogen ratio; Biocomposite.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100407