ABSTRACT

In general, composites contain two or m ore components that after combining have different properties both physically and chemically from the individual components. And, in particular, bionanocom­ posites that are made up of biopolymers and inorganic solids (metal oxides) that lie in the nanoregime size or in the nanom eter range (1 -1 0 0 nm) have novel and multifunctional properties, such as an­ timicrobial activity, biodegradability, and biocompatibility. They are used in drug release and bioengineering, in electronics, and in packaging of food items and, of course, regenerative medicines [1]. To develop pollution-free materials, constituents of bionanocom­ posites need to be modified that will help to clean the environment and be easily degradable. Pertinently, on comparison we find that the individual components o f nanocomposites show better prop­ erties, particularly mechanical, gas barrier, thermal, and flam e-re­ sistant properties [2-5]. As per the nature, methods of preparation, properties, and other application purposes bionanocomposites are different from simple nanocomposites. Prior to 2 0 0 4 bionanocom­ posites were studied by Wagner [6], who used silica nanoparticles and natural rubber, which has been acting as a reinforcem ent since long before in 1941.