**1. Introduction**

Use of polymers has increased significantly over other types of materials, this more than anything because of its many possible applications, true reflection of the ease offered to the design of new compositions with very different properties.

However, conventional polymers remain subject to very specific investigations, primarily aimed at improving their properties, as well as modifications that allow the expansion of its range of applications.

That is, materials can be prepared with very different properties, for example, polymers with a great structural rigidity, due to a high proportion of aromatic structures in the molecular skeleton or flexible polymers with chains exclusively of the concatenation of aliphatic groups.

These polymers are primarily used for their advantages being chemically inert, lightweight, durable, comfortable and hygienic, and submit versatility of shape and size. It is undeniable that the introduction and advancement in the technology of synthetic polymer‐based petro‐ leum have brought many benefits to humanity.

But nevertheless, to be synthetic compounds, nonbiodegradable and based on petroleum, use poses serious ecological problems, mainly due to the environmental pollution they cause, by manufacturing and incineration as its contribution to the generation and accumulation of waste.

Since the last decades there has been a growing demand of friendly products environment, promoting the development of biodegradable materials based on biopolymers as lipids, polysaccharides, and proteins, which have been studied being renewable raw materials and inexpensive considered as an alternative to plastic nonbiodegradable and based on petroleum.

The replacement of synthetic plastics by biodegradable materials to obtain friendly products environment has not been achieved so far. However, if some synthetic polymers are replaced by other natural, in specific applications such as films, foams, covering, dishes, cups, spoons, and bags.
