Direct fabrication of cross-linking polymer coatings from monomers via Triethylamine gas-mediated thiol-ene chemistry for sustained fertilizers release

In this work, we developed a facile method for direct fabrication of cross-linking polymer coating from monomers via triethylamine gas-mediated thiol-ene chemistry. Combined with fluidized bed coating technology , we used this method to prepare a kind of biobased polymer coated slow-release fertilizer. The polymer coating was synthesized from low-cost, biodegradable, and renewable castor oil. The nitrogen-release behavior, the promotion on seed germination and early-stage seedling growth of polymer-coated urea granules were investigated. The coating method demonstrated in this research could provide a new perspective for the development of a new generation of biobased slow-release fertilizer.