Diffusion-limited aggregation in potato starch and hydrogen borate electrolyte system

Abstract

Natural growth of diffusion-limited aggregate (DLA), without any external stimuli, in boric acid doped starch system is reported here. Fractals grown were confirmed to be of diffusion-limited aggregate (DLA) pattern having fractal dimension 1.49. Effect of substrate and humidity on growth pattern has also been discussed. The existence of a different vibration band of H3BO 3 in FTIR confirmed that growth structures are related to boric acid. XRD pattern has shown broad peak along with some sharp peaks. Broad peak is related to starch's amorphous nature, as where intense sharp peaks are due to boric acid. © 2013 Tuhina Tiwari et al.