The development of environmentally friendly polymeric materials
have attracted extensive interest due to the environmental
pollution problems caused by using petrochemical based synthetic
polymers (Avella et al., 2002; Averous, 2004). Biodegradable
polymers are an alternative replacement for traditional petroleumbased
non biodegradable polymers. The degradable plastics, after
their useful life, will simply fall apart, get assimilated by microorganisms
and return to the natural ecosystem without causing
any pollution or harm to the nature. Recently, environmental
friendly biodegradable polymers made of materials from natural
and renewable resources have received much attention (Nakamura
et al., 2005). Among the natural polymers, starch has been considered
one of the most promising materials for future because