DataVXACS Applied Materials & InterfacesPaper
journal article·2022-12-21

Bio-based Polyurethane Based on a Dynamic Covalent Network with Damage Tolerance for Controlled Release of Fertilizers

Zhen Yu, Dongdong Cheng, Bin Gao, Yuanyuan Yao, Chenghao Liu, Junyin Li, Chun Wang, Jiazhuo Xie, Shugang Zhang, Zhao Li, Yuechao Yang

ACS Applied Materials & Interfaces· Volume 14· Issue 50
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Source abstract

Abstract

Bio-based polyurethanes are promising for the controlled release of nutrients and fertilizers, but their toughness and plasticity need to be improved. We developed a smooth, dense, elastic, and indestructible bio-based polyurethane (BPU) coating with a nutrient controlled release ∼150% superior, a tensile strength ∼300% higher, and a toughness ∼1200% higher than those for the original BPU coating. Through a one-step reaction of soybean oil polyols (accounting for more than 60%), isocyanate, and benzil dioxime, the dynamic covalent network based on oxime-carbamate replaces part of irreversible covalent cross-linking. The dynamic fracture-bonding reaction in the modified coating BPU can effectively promote the hydrogen bond recombination and oxime-carbamate chain migration in the coating process, which avoids the structural defects caused by coating tear and fertilizer collision. This work provides a simple and versatile strategy for building controlled-release fertilizer coatings.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Polymer-Based Agricultural Enhancements · biodegradable polymer synthesis and properties · Electrospun Nanofibers in Biomedical Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources; National Engineering & Technology Research Center for Slow and Controlled Release Fertilizers, College of Resources and Environment, Shandong Agricultural University, Taian, Shandong 271018, China

Agricultural and Biological Engineering, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, Florida 32611-0570, United States

Department of Soil and Water Science, Tropical Research and Education Center, IFAS, University of Florida, Homestead, Florida 33031, United States

Funding

China Association for Science and Technology · Ministry of Science and Technology of the People's Republic of China · Shandong Province · Shandong Agricultural University · China Postdoctoral Science Foundation · National Natural Science Foundation of China · Natural Science Foundation of Shandong Province · Open Research Fund from Kingenta · Shandong Agricultural Innovation Team

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