Abstract
Sisal fibers have been selected as reinforcing materials to prepare biolaminates using a biobased epoxy matrix. To analyze the effect of surface chemistry on the preparation of the laminates, the fibers have been chemically modified with solutions of sodium hydroxide and acetic anhydride. The results of the characterization of the fibers have shown a change of color, attributed to the chemical treatments, which is reflected in the presence of OH and C = O groups in the infrared spectra of the modified fibers. The presence of these groups has had an important effect on the thermal properties of fibers and biolaminates, since their degradation mechanism is the opposite of that of unmodified sisal. In the case of mechanical properties, it has been identified that the laminates prepared with the modified fibers have lower maximum stress and modulus of elasticity than the biolaminate prepared only with sisal.
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