Abstract
Atrazine is more reliable, effective and less expensive herbicide than any other available weed control approach. However, its easy leaching is matter of great environmental and health concern which limits its strong recommendation for practical applicability. Hence, in the present work atrazine containing agar/starch/poly(AAm) hydrogels have been prepared for its slow delivery applications. These hydrogels have been characterized by scanning electron micrography, Fourier transform infrared spectroscopy, X-Ray diffractometry and swelling studies. Hydrogels prepared at optimum reaction conditions (1 % agar, 5 % starch, 0.98 M acrylamide, and 12.97 mM N,N-methylenebisacrylamide) has shown maximum swelling 551.5 %. The release of atrazine from the hydrogels occurred through non-Fickian diffusion mechanism. The controlled release has been observed for 144 hours. High polymer matrix swelling and slow release make these hydrogels suitable for agricultural applications.
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