Bio-based Interpenetrating Network Polymer Composites from Locust Sawdust as Coating Material for Environmentally Friendly Controlled-Release Urea Fertilizers

• DOI: 10.1021/acs.jafc.6b01688
• Publication Date: 2016-06-28T16:35:36Z
• Authors: Shugang Zhang; Yuechao Yang; Bin Gao; Yongshan Wan; Yuncong C. Li; Chenhao Zhao
• Keywords: Sawdust; Coated urea; Environmentally Friendly; Interpenetrating polymer network

A novel polymer-coated nitrogen (N) fertilizer was developed using bio-based polyurethane (PU) derived from liquefied locust sawdust as the coating material. The PU successfully coated on surface of urea prills to form (PCU) for controlled N release. Epoxy resin (EP) also used further modify synthesize interpenetrating network (IPN), enhancing slow-release properties PCU. release characteristics EP-modified PCU (EMPCU) in water were determine at 25 °C and compared that EP-coated (ECU). results showed EP modification reduced rate increased longevity with PU. corn growth study conducted evaluate filed application EMPCU. In comparison commercial conventional fertilizer, EMPCU more effective yield total dry matter accumulation corn. Findings this work indicated can be materials PCU, particularly after modification. resulting environmentally friendly cost-effective than fertilizers by EP.