Preparation and Pesticide Release Performance of Carboxymethyl Chitosan Film

Abstract The slow/controlled release technology is effective in enhancing the utilization of pesticide and reducing the environment pollution caused by pesticide. In this study, the slow/controlled release carboxymethyl chitosan films were prepared by film casting method, and the pesticide release properties were investigated. The results showed that the pesticide-loaded carboxymethyl chitosan films were smooth and uniform. Different pesticide-loaded films had different film thicknesses, pesticide loading and encapsulation efficiency, but had the same pesticide release trend, which might be the result of multiple pesticide release mechanisms including the swelling and erosion of the carboxymethyl chitosan. This study would promote the application of slow/controlled release technologies in pesticides and accelerate the green and efficient development of agriculture.