Superabsorbent hydrogels based on polysaccharides for application in agriculture as soil conditioner and nutrient carrier: A review

被引：538
作者：
Guilherme, Marcos R. [1 ]
Aouada, Fauze A. [2 ]
Fajardo, Andre R. [3 ]
Martins, Alessandro F. [1 ,4 ]
Paulino, Alexandre T. [5 ]
Davi, Magali F. T. [6 ]
Rubira, Adley F. [1 ]
Muniz, Edvani C. [1 ,6 ]
机构：
[1] Univ Estadual Maringa, Dept Quim, BR-87020900 Maringa, Parana, Brazil
[2] UNESP, Fac Engn Ilha Solteira, Dept Fis & Quim, BR-15385000 Ilha Solteira, SP, Brazil
[3] Univ Fed Pelotas, CCQFA, BR-96010900 Pelotas, RS, Brazil
[4] Univ Tecnol Fed Parana UTFPR DV, BR-85660000 Dois Vizinhos, PR, Brazil
[5] Univ Estado Santa Catarina, Ctr Ensino Super Oeste, Dept Engn Alimentos, BR-89870000 Chapeco, SC, Brazil
[6] Univ Paranaense, UNIPAR, Programa Posgrad Biotecnol Aplicada Agr, BR-87502210 Umuarama, PR, Brazil
来源：
EUROPEAN POLYMER JOURNAL | 2015年 / 72卷
关键词：
Superabsorbent hydrogels; Polysaccharide-based hydrogels; Superabsorbent hydrogels applied to agriculture; Soil conditioners; Plant-nutrient carriers; DERIVATIVE-BASED SUPERABSORBENT; DYNAMIC-MECHANICAL ANALYSIS; NPK COMPOUND FERTILIZER; ONE-POT SYNTHESIS; CONTROLLED-RELEASE; GLYCIDYL METHACRYLATE; SWELLING BEHAVIORS; POLYMER NETWORK; MATHEMATICAL-MODEL; DRUG-DELIVERY;
D O I：
10.1016/j.eurpolymj.2015.04.017
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Superabsorbent hydrogels (SH) continue being a very important issue in both academic and industrial fields due to their applications in several technologies. This is proved by the impressive number of publications, through papers and patents as well, dealing with SH. This review is targeted to update and discuss some important aspects of synthesis, characterization and application of SH in agriculture, mainly those based on polysaccharides, as soil conditioners and as polymer carriers for nutrient release. Basic properties of SH and some methods for chemically modifying polysaccharides are given and some directions for hydrogels preparation are highlighted as well. Mechanisms associated with water transport into the 3D matrix, taking into account the transference of mass from hydrogelsoil system to plant, are discussed in the light of some mathematical models. Release of nutrients either from granules coated by hydrophilic polymer or from SH, targeting applications in agriculture, is also discussed on the basis of often used mathematical models (the swelling-based kinetic models) and on a diffusion-based kinetic model with a partition activity coefficient. Examples of recent applications in agriculture as soil conditioners and carriers for nutrient release (fertilizers, etc.) are given. At the final, future trends and perspectives are considered. More than two hundreds references are cited in the whole text. (C) 2015 Elsevier Ltd. All rights reserved.
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收藏
页码：365 / 385
页数：21
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