Protonated chitosan/poly(ε-caprolactone) graft copolymer coatings for pH-modulated release of phosphorus fertilizers.
This study reports the synthesis of protonated chitosan-g-poly(ε-caprolactone) copolymers and their use as pH-modulated coatings for the controlled release of phosphorus from granular monoammonium phosphate (MAP) and diammonium phosphate (DAP) fertilizers. Copolymers were synthesized in two steps: first, chitosan amino...