Biocomposites based on castor oil polyurethane and organosilane modified cellulose fibers - Laboratoire d'Ingéniérie et Science des Matériaux - EA 4695
Article Dans Une Revue Journal of Materials and Environmental Science Année : 2016

Biocomposites based on castor oil polyurethane and organosilane modified cellulose fibers

Résumé

Chemical modification of cellulose fibers with a trialkoxysilane has been performed and modified cellulosecastor oil polyurethane composites have been successfully studied. The modified cellulose and all composites was characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetry (TGA) and water uptake test (WU). Compared with the crude cellulose fibers, the organosilane treatment reduces the hydrophilicity of the natural fibers and increases the fiber/matrix compatibility. In addition, the better dispersion of treated cellulose fibers was characterized by scanning electron microscopy (SEM). Cellulose fiber modification effect on mechanical properties was investigated by uniaxial traction test. Results show an improvement of Young modulus and tensile strength. Composites thermal properties of are also improved after the organosilane treatment of fibers. These results are due to the interfacial adhesion improvement by the formation of chemical bonding between prepolymer isocyanate extremities and the glycidol grafted on cellulose surface.
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Dates et versions

hal-03601228 , version 1 (21-09-2024)

Identifiants

  • HAL Id : hal-03601228 , version 1

Citer

Ikram Ganetri, Abdelkader Oulmidi, Noureddine Dardouri, Allal Challioui, Lan Tighzert, et al.. Biocomposites based on castor oil polyurethane and organosilane modified cellulose fibers. Journal of Materials and Environmental Science , 2016, 7 (10), pp.3740-3749. ⟨hal-03601228⟩
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