*3.1.1 Chemical composition of cocoa powder hulls*

As shown in **Table 3** physicochemical properties of cocoa powder hulls is given below.

The dry matter content in our powder was of the order of 88.1%, against 92.1% in organic matter. This high organic matter content shows that cocoa hulls can be an important source of raw material for the production of composites given its organic matter content. The tensile test evaluation was performed on the Instron 5567 with a climb speed of 50 mm/min. Preparation of samples for testing was performed according to ASTM D638. At the start of the analysis, the specimen lengthens and the resistance of the specimen increases, which was detected using a load cell; the value was recorded until the composite failed. For this, five samples were tested in order to evaluate the standard deviation [13].
