Preparation and characterization of polyurethane based on dimer acid for environment-friendly controlled release fertilizers. Issue 14 (22nd September 2019)

• Record Type: Journal Article
• Authors: Zhang, Xiao; Jiang, Yanghui; Jia, Cong; Lu, Panfang; Chen, Hongkun
• Is Part Of: Polymer-plastics technology and materials. Volume 58:Issue 14(2019)
• Page Start: 1571
• Page End: 1584
• Publication Date: 2019-09-22
• Subjects: Dimer acid -- bio-based polyurethane -- Controlled release fertilizers; Polymers -- Periodicals; Polymerization -- Periodicals; Plastics -- Periodicals; Plastics; Polymerization; Polymers; Periodicals; 668
• DOI: 10.1080/25740881.2018.1563134
• Languages: English
• ISSNs: 2574-0881

Abstract

ABSTRACT: The paper presents a new controlled release fertilizer coated by dimer acid-based polyurethane (PU). The structure and property of the sample were characterized. Results indicated that the polyether polyol modified PU (MPU) coating reduced water absorption rate by 72.1% after 29 d, and increased the cross-linking density by 23%, and decreased the coating porosity by 26%, Moreover, MPUFs and PUFs both exhibited excellent nutrient controlled release abilities, especially the MPUF possessed longer nitrogen release longevity (118 d, 131%) compared with PUF (51 d). Thus, the high-performance MPUFs with environmentally friendly and excellent controlled release could be widely applied to agricultural fields. Graphical Abstract: