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具有光敏性的生物基聚氨酯控释尿素涂层的制备与性能

Preparation and Properties of Bio-Based Polyurethane Controlled Release Urea Coating with Photosensitivity.

作者信息

Zhang Lina, Tian Hongyu, Zhang Min, Wu Liang, Guo Wusong, Fang Fuli, Sun Xiao, Zhong Zijing, Du Longxu, Liu Zhiguang

机构信息

National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Recourses and Environment, Shandong Agricultural University, Taian 271018, China.

Key Laboratory of Crop Specific Fertilizer, Ministry of Agriculture and Rural Affairs, Xinyangfeng Agricultural Technology Co Ltd., Jingmen, Hubei 448001, China.

出版信息

ACS Omega. 2022 Mar 1;7(10):8558-8569. doi: 10.1021/acsomega.1c06432. eCollection 2022 Mar 15.

DOI:10.1021/acsomega.1c06432
PMID:35309463
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8928513/
Abstract

In order to improve the photodegradation ability of fertilizer coating material and realize the sustainability of fertilizers, in this study, the commercially available photosensitive iron stearate (FeSt) was wet-ground into submicrometer FeSt (SFeSt) particles and used in preparation of a SFeSt-modified bio-based polyurethane (PU)-coated controlled release urea (PU-SFe-CRU). The results showed that after 1 month photodegradation, the coating material had significant yellowing, the oxygen content of SFeSt-modified PU (PU-SFe) increased by 56.89%, and its structure became more porous and looser than PU. The thermal stability of PU-SFe decreased, and more intermediate products were produced after exposure to UV light. The germination experiment showed that PU-SFe before and after photodegradation (up to 60 mg/L) had no adverse effect on the seed germination and bud growth of rice. Additionally, PU-SFe had a significantly higher Cr adsorption capacity after photodegradation due to the increase of the oxygen-containing group and specific surface. This study provides a theoretical basis for the research and development of photodegradable environment-friendly controlled release urea.

摘要

为了提高肥料包膜材料的光降解能力并实现肥料的可持续性，本研究将市售的光敏硬脂酸铁（FeSt）湿磨成亚微米级FeSt（SFeSt）颗粒，并用于制备SFeSt改性的生物基聚氨酯（PU）包膜控释尿素（PU-SFe-CRU）。结果表明，经过1个月的光降解后，包膜材料出现明显泛黄，SFeSt改性PU（PU-SFe）的氧含量增加了56.89%，其结构比PU变得更加多孔和疏松。PU-SFe的热稳定性降低，暴露于紫外光后产生了更多的中间产物。发芽试验表明，光降解前后的PU-SFe（浓度高达60 mg/L）对水稻种子萌发和芽生长没有不利影响。此外，由于含氧基团和比表面积的增加，光降解后的PU-SFe对Cr的吸附能力显著提高。本研究为光降解型环保控释尿素的研发提供了理论依据。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/cf4d304ca33e/ao1c06432_0013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/48d616b0ae24/ao1c06432_0002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/a79696cd61d7/ao1c06432_0006.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/cf4d304ca33e/ao1c06432_0013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/48d616b0ae24/ao1c06432_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/4ba57af9f4d2/ao1c06432_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/75b520f80b31/ao1c06432_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/56b4cd7c9d3d/ao1c06432_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/a79696cd61d7/ao1c06432_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/0f2d66b0f39a/ao1c06432_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/583ff6acee97/ao1c06432_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/bd658aa31753/ao1c06432_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/57efa075982a/ao1c06432_0011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/5983723dc249/ao1c06432_0012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9046/8928513/cf4d304ca33e/ao1c06432_0013.jpg

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本文引用的文献

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