1. Introduction
The environmental awareness imposed to packaging films is to design or synthesize polymers that are biodegradable to be used as packaging materials. For the application in a number of areas such as food packaging and containers, the benefits of using biodegradable packaging materials are obvious. Biodegradable polymers derived from sugars, natural fibers, renewable forest resources, and protein are able to reduce or replace the usage of the fossil-based materials thus reducing the pollution caused by conventional plastic packaging.