Surface modification of sized vegetal fibers through direct fluorination for eco-composites
| Autor: | Marc Dubois, Karine Charlet, Jean-Charles Agopian, Olivier Teraube, Elodie Petit, François Metz, Nicolas Batisse |
|---|---|
| Přispěvatelé: | Institut de Chimie de Clermont-Ferrand (ICCF), SIGMA Clermont (SIGMA Clermont)-Institut de Chimie du CNRS (INC)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Solvay Special Chem, 85 avenue des Frères Perret, 69192, Saint-Fons |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Glass fiber
Hydrophobicity 010402 general chemistry 01 natural sciences Biochemistry Inorganic Chemistry Surface tension chemistry.chemical_compound Fluorination Environmental Chemistry Physical and Theoretical Chemistry Composite material Natural fiber Polypropylene chemistry.chemical_classification 010405 organic chemistry Eco-composite Organic Chemistry Chemical modification Compatibilization Polymer [CHIM.MATE]Chemical Sciences/Material chemistry 0104 chemical sciences chemistry DGEBA Surface modification |
| Zdroj: | Journal of Fluorine Chemistry Journal of Fluorine Chemistry, Elsevier, 2020, 238, pp.109618. ⟨10.1016/j.jfluchem.2020.109618⟩ Journal of Fluorine Chemistry, 2020, 238, pp.109618. ⟨10.1016/j.jfluchem.2020.109618⟩ |
| ISSN: | 0022-1139 |
| DOI: | 10.1016/j.jfluchem.2020.109618⟩ |
| Popis: | International audience; Natural fibers are frequently used as alternatives of glass fibers as polymer matrix reinforcement to form composite materials. However, their natural hydrophilicity prevents them from being easily compatible with hydrophobic polymers, which represent the majority of matrices. To solve this, direct fluorination of sized natural fibers (flax fibers sized with DGEBA) was performed. EDX, FTIR and 19F NMR analysis evidenced the chemical grafting of fluorine on DGEBA structure and the ablation of the oxiranes rings on this molecule. Chemical modifications of DGEBA have induced a hydrophobic character of this layer, by reducing at 0 the polar component of surface tension. Thereby, treated fibers are supposed to be perfectly chemically compatible with the hydrophobic polymer matrices (e.g. polypropylene). Additionally, the fluorination time also allows the dispersive component of surface tension and the rugosity of fibers to be tailored in order to perfectly adjust these characteristics and fit with the polymer. Moreover, this chemical modification was achieved without altering the mechanical properties of fibers for short fluorination times. |
| Databáze: | OpenAIRE |
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