**5. Conclusions**

The knowledge that the ecosystem is already considerably contaminated as a consequence of the use of synthetic polymers derived from petroleum, environmental initiatives have now been put in place to promote research work on new products which will be compatible with the environment. The development of biocomposites of TPS with cellulose can reduce the dependency on oil reserves.

In recent times, science and technology has centered on the use of more environmentally friendly, raw materials; emphasizing the importance of the advances in such research on "green" composite materials and cellulose fibers for use in the industry.

It is important to mention that cellulose on a nanometric scale is used as a biodegradable reinforced material to improve the mechanical properties as well as the water barrier properties of the TPS.

According to reports in the literature, the technique for the preparation of cellulose fibers from different materials is very similar, whereas the technique for the preparation of TPS reinforced with CNF presents some differences depending on the type of material processed.

Starches from different sources which do not include corn and potato are used in the devel‐ opment of the green composite material, while the cellulose fibers are obtained from waste material produced by the industries, the aim being to attain the sustainability of natural resources.

Extrusion is one of the most promising methods for processing "green" composite materials and cellulose fibers (TPS‐cellulose); however, very little information is available with respect to this.

Based on information found in the literature, it is reported that the incorporation of CNF mechanically reinforces the films, which display high tensile strength, low deformation, and low WVP.

Within the next few years, it is highly likely that the production of biocomposites of TPS films‐ cellulose will intensify with techniques that are normally used in synthetic polymer processing.
