Application of Sorghum Starch for Preparing Superabsorbent

Teli, M. D.; Mallick, Aranya

doi:10.1007/s10924-017-1057-7

Cited by 12 publications

(5 citation statements)

References 29 publications

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“…When the initiator concentration is less than 1.4%, more and more free radicals are produced as the concentration go up. Then, more active sites are formed in order to graft 39 . Therefore, more hydrophilic groups are connected to the 3D scaffold in the purpose of improving the absorbency ability.…”

Section: Resultsmentioning

confidence: 99%

“…When the reaction time reaches 120 min, the composite has the maximum swelling capacity. When the reaction time is less than 120 min, the polymerization reaction is incomplete, resulting in low polymer molecular weight and short molecular chain 39 . The swelling space becomes smaller for the network structure and causes the absorbency capacity to decrease.…”

Section: Resultsmentioning

confidence: 99%

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Preparation and properties of a biodegradability superabsorbent composite based on flax cake protein‐g‐poly (acrylic acid)/Kaolinite

Zhang

Guo

Liu

et al. 2021

J of Applied Polymer Sci

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The protein‐based superabsorbent composite FCP‐g‐PAA/Kaolinite is prepared by grafting acrylic acid (AA) into the flax cake protein (FCP) using free radical polymerization in this study. The chemical structure, thermal stability, and the morphology of the FCP‐g‐PAA/Kaolinite are characterized by Fourier transform infrared, Thermogravimetric analysis, and scanning electron microscope. The results show that AA was grafted successfully into FCP. And, it has the maximum swelling capacity where the MBA concentration, APS concentration, Kaolinite concentration, FCP concentration, neutralization degree, and reaction time was 0.13%, 1.4%, 8%, 9%, 70% and 2 h, respectively. The swelling capacity reaches 860 g/g in distilled water, 238 g/g in tap water and 78 g/g in 0.9% NaCl. In addition, its water absorbency can still reach 60% after reuse for six times and the water retention rate of the material was 70% after 12 h. Therefore, FCP has a broad application prospect as a material for preparing superabsorbent composite.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Preparation and properties of a biodegradability superabsorbent composite based on flax cake protein‐g‐poly (acrylic acid)/Kaolinite

Zhang

Guo

Liu

et al. 2021

J of Applied Polymer Sci

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“…93 Therefore, saponification and grafting modifications can be employed to convert nonionic hydrophilic groups into ionic ones for further enhancement of water absorption performance. Teli et al 94 converted the −CONH 2 group of modified starch into −COONa through a saponification reaction, resulting in an increase in the water absorption ratio of the material from 85 to 400 g/g. Peng et al 95 introduced sulfonic acid groups into starch to synthesize sulfonated starch, which was then used as a replacement for original starch in the preparation of superabsorbent hydrogel.…”

Section: Methods For Water Absorption Improvementmentioning

confidence: 99%

Rational Design of a Multifunctional Hydrogel Trap for Water and Fertilizer Capture: A Review

Wu,

Sheng,

et al. 2024

J. Agric. Food Chem.

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Water scarcity and land infertility pose significant challenges to agricultural development, particularly in arid and semiarid regions. Improving soil-water-retention capacity and fertilizer utilization efficiency through the application of soil additives has become a pivotal approach in agricultural practices. Hydrogels exhibit exceptional water absorption and fertilizer retention capabilities, making them extensively utilized in the fields of agriculture, forestry, and desert control. Currently, most reviews primarily focus on the raw materials, classification, synthesis methods, and application prospects of hydrogels, with limited attention given to strategies for enhancing water-retention performance, mechanisms underlying fertilizer absorption, and environmental risks. This review covers the commonly used cross-linking methods in hydrogel synthesis and the structure−activity relationship between hydrogels and water as well as fertilizer. Additionally, a thorough analysis of the ecological benefits and risks associated with hydrogels is presented. Finally, future prospects and challenges are delineated from the perspectives of material design and engineering applications.

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“…The synthetic SAP based on potassium polyacrylate is widely used in today’s agriculture. In addition to these inorganic SAPs, there are also bio-based superabsorbent hydrogels called natural hydroabsorbents (NHAs), formed by crosslinking organic compounds such as carrageenan and alginates; modified cellulose; oxidized starch, gelatine and other proteins [ 32 , 33 , 34 , 35 ]; crosslinked cellulose acetate [ 36 ] and their copolymers with synthetic polymers [ 37 ]. The production of biopolymers from bioplastics such as polyhydroxybutyrate or polylactic acid is also a point of interest of the current research [ 38 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Natural Liquid Hydroabsorbents on Ammonia Emission from Liquid Nitrogen Fertilizers and Plant Growth of Maize (Zea Mays L.) under Drought Conditions

Kriška

Škarpa

Antošovský

2023

Plants

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The use of mineral nitrogen (N) fertilizers is associated with significant nitrogen loss through the volatilization. Ammonia (NH3) emissions are common from fertilizers with amide (NH2) and ammonium (NH4) nitrogen forms applied to the soil surface without incorporation. The objective of the laboratory and greenhouse pot experiments was to verify the hypothesis that liquid mineral fertilizers and fertilizer solutions containing N-NH2 and N-NH4 applied to the soil surface in combination with natural hydroabsorbents (NHAs) will reduce the volatilization of nitrogen. The effect of NHAs addition to urea ammonium nitrate (UAN) fertilizer and urea, ammonium nitrate (AN) and ammonium sulphate (AS) solutions was evaluated in a laboratory experiment. The effect of the two types of NHAs (acidic and neutral) was compared with the control (UAN) and its mixture with the commercially used urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT). The proportion of volatilized NH3 of the total N from the examined fertilizers applied to the soil surface was determined by the titration method. Subsequently, the effect of fertilization with UAN and its mixture with NHAs and NBPT on the growth of maize under the drought conditions was verified in a greenhouse pot experiment. While the addition of NBPT resulted in a reduction of NH3 emission for the fertilizers containing NH2 (UAN, urea solution), a decrease in volatilization after the addition of both acidic and neutral NHA was observed especially for UAN. A reduction in ammonia emission was also observed for AS after the addition of acidic NHA. The addition of both NHAs and NBPT to UAN increased the utilization of nitrogen from the applied fertilizer, which was reflected by an increase in chlorophyll content and increased CO2 assimilation by maize plants grown under the drought stress. UAN fertilizer combined with acidic NHA and NBPT significantly increased aboveground biomass production and root system capacity of maize. Significant increases in UAN nitrogen recovery were observed for all examined additives (UI and both types of NHAs). In addition to the known effects of hydroabsorbents, especially their influence on soil physical and biological properties and soil water retention, the effect of NHAs application in combination with UAN and AS solutions on the reduction of gaseous N loss, maize plant growth and fertilizer nitrogen recovery was found.

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Application of Sorghum Starch for Preparing Superabsorbent

Cited by 12 publications

References 29 publications

Preparation and properties of a biodegradability superabsorbent composite based on flax cake protein‐g‐poly (acrylic acid)/Kaolinite

Preparation and properties of a biodegradability superabsorbent composite based on flax cake protein‐g‐poly (acrylic acid)/Kaolinite

Rational Design of a Multifunctional Hydrogel Trap for Water and Fertilizer Capture: A Review

Effect of Natural Liquid Hydroabsorbents on Ammonia Emission from Liquid Nitrogen Fertilizers and Plant Growth of Maize (Zea Mays L.) under Drought Conditions

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