Abstract

A composite material, prepared by mixing polybutadiene (PBd) (commercial sample) and cellulose diacetate (DAC) chemically functionalized in our laboratory, was studied. In this composite, DAC is a bio-degradable modifying material (with a concentration between 5 and 15 vol%), while the PBd is the continuous phase. The addition of a small amount of the modifier drastically changes the properties of the continuous matrix. Due to the semi-rigid character of the DAC molecule and the very small miscibility between these polymers, the discrete phase formed by DAC is anisotropic, leading to a strong modification of the mechanical properties of the material. In order to improve the adhesion between the two phases, the DAC molecules were chemically functionalized. This is an important feature for good performance of the composite in terms of its mechanical properties.

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