Packaging Applications

Abstract

Development of packaging materials based on bio-nanocomposites for food and other food contact surfaces is expected to grow in the next decade with the current focus on exploring alternatives to petroleum and emphasis on reducing environmental impact. In this context, this chapter reviews recent advancements related to biodegradable polymer nanocomposites. The chapter discusses various techniques that have been used for devel- oping cost-effective bio-based packaging materials with optimum material properties. The biodegradable polymers addressed in this chapter include polylactide (PLA), poly (hydroxyalkanoate)s (PHA) such as poly(ß-hydroxybutyrate) (PHB), poly(3-hydroxybu- tyrate-co-3-hydroxyvalerate) (PHBV), and natural renewable polymers such as starch, and proteins. Special emphasis is given to the advantages of using clays as nanofiller, in order to improve the mechanical and the barrier properties of these biopolymeric matrices. New natural nanofillers such as cellulose and chitin nanofibers or starch nanocrystals are also addressed.