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03657nam a2200937Ia 4500 |
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10.1016-j.ijbiomac.2021.01.063 |
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220427s2021 CNT 000 0 und d |
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|a 01418130 (ISSN)
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|a Novel alginate-cellulose nanofiber-poly(vinyl alcohol) hydrogels for carrying and delivering nitrogen, phosphorus and potassium chemicals
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|b Elsevier B.V.
|c 2021
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|z View Fulltext in Publisher
|u https://doi.org/10.1016/j.ijbiomac.2021.01.063
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|a Novel nanocomposite hydrogels were successfully prepared by blending and crosslinking sodium alginate (SA), poly(vinyl alcohol) (PVA) and cellulose nanofibers (CNFs) in the presence of a fertilizer formulation containing nitrogen (N), phosphorus (P) and potassium (K). The hydrogels had a macroporous flexible core and a microporous semi- interpenetrating polymer network (IPN) shell. The crystalline nature of the NPK chemicals was retained in the hydrogel nanocomposite network. Furthermore, the SA/CNF/PVA-based hydrogels showed a higher water-retention capacity in both deionized water and mixed soil. The swelling behavior in various physiological pH, salt and alkali solutions exhibited good sensitivity. The NPK release from SA/CNF/NPK and SA/CNF/PVA/NPK hydrogels was controlled by Fickian diffusion in both water and soil based on the Korsmeyer-Peppas release kinetics model (n < 0.5). Therefore, the prepared hydrogels have the potential for applications in drought-prone and/or fertilizer-loss regions for future development of precision agriculture and horticulture. © 2021
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|a agriculture
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|a Agriculture
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|a Alginate-cellulose nanofiber-poly(vinyl alcohol) hydrogel
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|a Alginates
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|a alginic acid
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|a alginic acid
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|a alkali
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|a Article
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|a cellulose nanofiber
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|a chemical structure
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|a chemistry
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|a cross linking
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|a crystal structure
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|a crystallization
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|a Crystallization
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|a deionized water
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|a delayed release formulation
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|a Delayed-Action Preparations
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|a diffusion
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|a drought
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|a Drug Liberation
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|a drug release
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|a fertilizer
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|a fertilizer
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|a Fertilizers
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|a human
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|a Humans
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|a hydrogel
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|a Hydrogen-Ion Concentration
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|a kinetics
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|a Kinetics
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|a nanofiber
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|a nanofiber
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|a Nanofibers
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|a nitrogen
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|a nitrogen
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|a Nitrogen
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|a pH
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|a phosphorus
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|a phosphorus
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|a Phosphorus
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|a polyvinyl alcohol
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|a polyvinyl alcohol
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|a Polyvinyl Alcohol
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|a polyvinyl alcohol hydrogel
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|a porosity
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|a Porosity
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|a potassium
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|a potassium
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|a Potassium
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|a procedures
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|a Slow-release of chemicals
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|a sodium chloride
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|a soil
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|a Swelling kinetics
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|a transport kinetics
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|a ultrastructure
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|a unclassified drug
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|a water
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|a Water
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|a water retention
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|a Cheng, H.N.
|e author
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|a Liu, S.
|e author
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|a Sun, X.
|e author
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|a Tubana, B.
|e author
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|a Wu, Q.
|e author
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|a Yang, R.
|e author
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|a Yue, Y.
|e author
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| 773 |
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|t International Journal of Biological Macromolecules
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