Electroactive biopolymer

Gum Arabica is a natural plant gum that exudates a carbohydrate type and is an electroactive biopolymer. Gum Arabica and its complexes have potential applications in developing ionic devices such as batteries, sensors, bio-sensors, and other electronic applications, in addition to solar material, energy storage material and nanoscience. Biopolymers obtained from bacteria are rapidly emerging because they are biodegradable and available in abundance. Simple methods are being developed to grow and harvest the polymers to exploit them for numerous industrial and biomedical applications. Electronic structures and conduction properties of biopolymers are also discussed in Part III. 

Keywords Gum Arabica, natural biopolymer, electroactivity, nanocomposites, solar material... 

In this chapter the emphasis will be on electrical transport as the hallmark of electroactivity. Electrical conductivity of polymers is a material property which may vary over a wide range. Biopolymers are a subclass of organic conductors. The electrical conductivity in what is otherwise a biopolymer originates from... 

Bulk electrical conduction The gross feature of the electroactivity of a material is best understood from the a.c. experiment. The variation of complex impedance and loss angle with frequency of the applied voltage was studied for better information about the a.c. conductance of the biopolymer gum Arabica. This measurement was carried out on a gum Arabica sample caste on a plane copper surface between frequency ranges 0.5 Hz - 100 KHz and between... 

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