Role of urea and melamine as synergic co-plasticizers for starch composites for fertilizer application

被引：37

作者：

Giroto, Amanda S. ^{[1
]}

Garcia, Rodrigo H. S. ^{[1
]}

Colnago, Luiz A. ^{[1
]}

Klamczynski, Artur ^{[2
]}

Glenn, Greg M. ^{[2
]}

Ribeiro, Caue ^{[1
,3
]}

机构：

[1] Embrapa Instrumentat, 1452 15 Novembro St, BR-13560970 Sao Carlos, SP, Brazil

[2] USDA ARS, Bioprod Chem & Engn Res, Western Reg Res Ctr, Albany, CA 94710 USA

[3] Forschungszentrum Julich, Inst Energy & Climate Res IEK 14 Electrochem Proc, D-52425 Julich, Germany

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2020年 / 144卷

基金：

巴西圣保罗研究基金会;

关键词：

Thermoplastic starch; Amide plasticizer; FT-Raman; Crystallinity; C-13; NMR; SOLID-STATE NMR; C-13 CP/MAS NMR; RAMAN-SPECTRA; MIXED PLASTICIZER; SPECTROSCOPY; CRYSTALLINITY; RELEASE; FILMS;

D O I：

10.1016/j.ijbiomac.2019.12.094

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Herein we describe the interaction of starch, urea, and melamine (C3N6H6) in composite materials for use as controlled-release plant fertilizer. Slow-release fertilizers are important in minimizing nutrient losses due to run-off, leaching, and other factors. Urea is an effective plasticizer for starch and is an important nitrogen fertilizer throughout the world. Melamine also has high nitrogen content and could be combined with urea-starch composites to provide enhanced controlled-release fertilizer. This study reports the structural interaction and the performance gain of melamine addition to starch-urea composites. Composites were characterized by spectro-scopic techniques (FT-Raman and C-13 NMR) detailing the interaction between melamine, urea, and starch. These interactions helped facilitate extrusion processing by lowering viscosity and processing temperatures suggesting an enhanced starch plasticizing effect of starch-urea-melamine composites. Further research into the co-plasticization of starch by urea and melamine could be exploited for improved controlled-release fertilizer products. Further research into the co-plasticization of starch by urea and melamine could be exploited for improved controlled-release fertilizer products. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：143 / 150

页数：8

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