Synthesis of cellulose-based superabsorbent hydrogel with high salt tolerance for soil conditioning

Guo, Yu; Guo, Rongbo; Shi, Xilin; Lian, Shujuan; Zhou, Qiannan; Chen, Ying; Liu, Weifeng; Li, Wei

doi:10.1016/j.ijbiomac.2022.04.039

Cited by 39 publications

(18 citation statements)

References 51 publications

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“…The reaction of CMC with metal ions is one of the most common chemical cross-linking strategies for synthesising CMC gels [ 22 , 23 , 24 ]. In this method, as the cross-linking occurs via the formation of chemical bonds, the generation of the CMC gel is irreversible.…”

Section: Preparation Of Carboxymethyl Cellulose Hydrogelsmentioning

confidence: 99%

Synthesis and Applications of Carboxymethyl Cellulose Hydrogels

Zhang

Liu

et al. 2022

Gels

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Hydrogels are basic materials widely used in various fields, especially in biological engineering and medical imaging. Hydrogels consist of a hydrophilic three-dimensional polymer network that rapidly expands in water and can hold a large volume of water in its swelling state without dissolving. These characteristics have rendered hydrogels the material of choice in drug delivery applications. In particular, carboxymethyl cellulose (CMC) hydrogels have attracted considerable research attention for the development of safe drug delivery carriers because of their non-toxicity, good biodegradability, good biocompatibility and low immunogenicity. Aiming to inspire future research in this field, this review focuses on the current preparation methods and applications of CMC gels and highlights future lines of research for the further development of diverse applications.

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Section: Preparation Of Carboxymethyl Cellulose Hydrogelsmentioning

confidence: 99%

Synthesis and Applications of Carboxymethyl Cellulose Hydrogels

Zhang

Liu

et al. 2022

Gels

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Section: Superabsorbent Polymer Hydrogelsmentioning

confidence: 99%

“…Water-soluble cellulose derivatives are often used to prepare SAPs [ 99 , 100 , 101 , 102 , 103 ]. In [ 99 , 100 , 101 , 102 ], SAPs based on carboxymethylcellulose (CMC) were synthesized. Particularly, the authors of [ 99 , 100 ] prepared CMC/montmorillonite (MMT) hydrogels via electron beam irradiation [ 99 ] or gamma irradiation [ 90 ] of CMC/MMT mixed solutions with MBA [ 99 ] or AA and MBA [ 100 ].…”

Section: Superabsorbent Polymer Hydrogelsmentioning

confidence: 99%

Agricultural Applications of Superabsorbent Polymer Hydrogels

Краснопеева

Панова

Yakimansky

2022

IJMS

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This review presents data from the past five years on the use of polymeric superabsorbent hydrogels in agriculture as water and nutrient storage and retention materials, as well as additives that improve soil properties. The use of synthetic and natural polymeric hydrogels for these purposes is considered. Although natural polymers, such as various polysaccharides, have undoubted advantages related to their biocompatibility, biodegradability, and low cost, they are inferior to synthetic polymers in terms of water absorption and water retention properties. In this regard, the most promising are semi-synthetic polymeric superabsorbents based on natural polymers modified with additives or grafted chains of synthetic polymers, which can combine the advantages of natural and synthetic polymeric hydrogels without their disadvantages. Such semi-synthetic polymers are of great interest for agricultural applications, especially in dry regions, also because they can be used to create systems for the slow release of nutrients into the soil, which are necessary to increase crop yields using environmentally friendly technologies.

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“…These commercially available SAPs have water absorption capacity 100–300 g/g suitable for use in horticultural applications. − Biodegradable materials such as alginate, , cellulose, chitosan, and yeast to achieve these values have a significantly lower degree of swelling. To overcome this, natural materials and derivatives of acrylamide are sometimes used together. − ,− ,, The biodegradability of soil wetting agents mixed with these natural materials and acrylamide may vary depending on the type of monomer . Nevertheless, it has a faster decomposition rate than synthetic-based soil wetting agents.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrogels are generally based on polyacrylamides and polyacrylates or their derivatives to increase the water retention capacity . However, recently, research on biodegradable polymers has been carried out actively due to the problem of the coexistence of SAP based on organic materials with the environment. − These biodegradable SAPs are alginate, , starch, − cellulose, − chitosan, , and yeast, , all of which are low cost due to recycling of natural materials or waste and have an excellent rate of decomposition in the soil. However, all commercially available SAPs are based on polyacrylamides and polyacrylates, all of which are not biodegradable .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Nanocomposite Hydrogels for Improved Water Retention in Horticultural Soil

Kim

Rhie

Kong

et al. 2022

ACS Agric. Sci. Technol.

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Global desertification and shortage of agricultural water are occurring because of climate change such as prolonged drought and erratic rainfall. Accordingly, a means by which moisture can be retained in soil to sustain plants' growth in such harsh environmental conditions using polymer hydrogels (PHGs) has been developed. For PHGs for soil moisturization, the chains within the polymer are hydrophilic, and the polymer chains can contain water. PHGs have been used extensively to improve the water availability of plants by increasing the water retention of soils and substrates, and the application of hydrogel polymers may be an appropriate technique to improve the efficiency of water and fertilizer use. In this study, a nanocomposite (NC) hydrogel with a uniform cross-linked structure was successfully prepared using laponite, an inorganic nano-sheet, as PHGs for soil moisture retention. The prepared NC hydrogel was characterized through transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) and showed complete exfoliation of inorganic nano-sheets. The synthesized NC hydrogel is derived from potassium acrylate (KA)-containing potassium, which is an effective ion for plant growth and achieves complete swelling in about 20 min. In addition, it is possible to adjust the swelling characteristics by adjusting the ratio of KA and has a swelling characteristic of 100−300 g/g (vol of water per dry hydrogel wt) suitable for horticulture. The synthesized NC hydrogel was not affected by pH and the presence of inorganic salts and could swell up to 100 g/g in saline water. These properties mean that the NC hydrogel can be used as a superabsorbent polymer (SAP) in soil. The growth of cucumbers and tomatoes in NC hydrogel-amended soil did not negatively impact the physiological characteristics and shoot and root development.

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Synthesis of cellulose-based superabsorbent hydrogel with high salt tolerance for soil conditioning

Cited by 39 publications

References 51 publications

Synthesis and Applications of Carboxymethyl Cellulose Hydrogels

Synthesis and Applications of Carboxymethyl Cellulose Hydrogels

Agricultural Applications of Superabsorbent Polymer Hydrogels

Synthesis of Nanocomposite Hydrogels for Improved Water Retention in Horticultural Soil

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