AbstractIn order to enhance the controlled‐release property of starch‐based polyurethane (SPU) coating, polyurethane/montmorillonite (SPU/MMT) composite coatings for controlled‐release urea were prepared by in‐situ polymerization with a rotating drum. The effect of MMT on morphology, structure, physico‐chemical properties, especially controlled‐release property of the as‐prepared composite coatings were studied in detail. The results showed that MMT particles dispersed well in SPU matrix, and the obtained SPU/MMT composite coatings posse...
