Preparation and characterization of polyurethane-/MMT nanocomposite-coated urea as controlled-release fertilizers

被引：24

作者：

Jia, Chuanxiu ^{[1
]}

Zhang, Min ^{[2
]}

Lu, Panfang ^{[1
]}

机构：

[1] Shandong Agr Univ, Coll Chem & Mat Sci, Food Safety Anal & Test Engn Technol Res Ctr Shan, Tai An 271018, Shandong, Peoples R China

[2] Shandong Agr Univ, Coll Resources & Environm, Tai An, Shandong, Peoples R China

来源：

POLYMER-PLASTICS TECHNOLOGY AND MATERIALS | 2020年 / 59卷 / 09期

基金：

国家重点研发计划;

关键词：

Montmorillonite; polyurethane; nanocomposite; controlled-release fertilizers; NANO-MONTMORILLONITE; COMPOUND FERTILIZER; RUBBER;

D O I：

10.1080/25740881.2020.1719136

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A new nanocomposite coating was synthesized by MMT and polyurethane for controlled-release fertilizers (CRFs). The structure and properties of samples were characterized. The nutrient release behavior of nanocomposite-coated fertilizers (MPUs) and polyurethane-coated fertilizers (PU) in water and in soil were determined. SEM and TEM exhibited good dispersion of MMT lamellae in the MPU coatings. The results also showed that the water contact angle of the MPU coating was greatly improved, the water absorption was reduced by 65.7%, and the coating porosity was reduced by 30.0%. In addition, MPUs exhibited longer nutrient release longevity than that of PU (26 days), especially MPU with 5% MMT (90 days). Therefore, MPUs with excellent properties can provide information for the development of CRFs.

引用

页码：975 / 984

页数：10

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