Engineering of PVA/PVP Hydrogels for Agricultural Applications

Malka, Eyal; Margel, Shlomo

doi:10.3390/gels9110895

Cited by 8 publications

(1 citation statement)

References 161 publications

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“…Along with this, the positive effect of hydrogels is noted in increasing the resistance of plants to unfavorable environmental conditions, such as climate change, phytopathogens, pesticide load, as well as minimizing the excessive use of fertilizers, pesticides and water in the fields by reducing their losses from root habitats due to gradual release from hydrogels [2,15,16]. All hydrogels are conventionally divided according to the composition and properties of the polymers that form their basis into natural, synthetic and hybrid, and according to the structure of cross-links-into networks with covalent chemical bonds and networks of physical entanglements [17,18].…”

Section: Introductionmentioning

confidence: 99%

Polymer Gel Substrate: Synthesis and Application in the Intensive Light Artificial Culture of Agricultural Plants

Panova,

Krasnopeeva,

Laishevkina

et al. 2023

Gels

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This work is devoted to the description of the synthesis of hydrogels in the process of cryotropic gel formation based on copolymerization of synthesized potassium 3-sulfopropyl methacrylate and 2-hydroxyethyl methacrylate (SPMA-co-HEMA) and assessing the potential possibility of their use as substrates for growing plants in intensive light culture in a greenhouse. Gel substrates based on the SPMA-co-HEMA were created in two compositions, differing from each other in the presence of macro- and microelements, and their effects were studied on the plants’ physiological state (content of chlorophylls a and b, activity of catalase and peroxidase enzymes, intensity of lipid peroxidation, elemental compositions) at the vegetative period of their development and on the plants’ growth, productivity and quality of plant production at the final stages of development. Experiments were carried out under controlled microclimate conditions. Modern and standard generally accepted methods of gels were employed (ATR-FTIR and 13C NMR spectral studies, scanning electron microscopy, measurement of specific surface area and pore volume), as well as the methods of the physiological and chemical analysis of plants. The study demonstrated the swelling ability of the created gel substrates. Hydrogels’ structure, their specific surface area, porosity, and pore volume were investigated. Using the example of representatives of leaf, fruit and root vegetable crops, the high biological activity of gel substrates was revealed throughout the vegetation period. Species specificity in the reaction of plants to the presence of gel substrates in the root-inhabited environment was revealed. Lettuce, tomato and cucumber plants were more responsive to the effect of the gel substrate, and radish plants were less responsive. At the same time, more pronounced positive changes in plant growth, quality and productivity were observed in cucumber and lettuce in the variant of gel substrates with macro- and microelements and in tomato plants in both variants of gel substrates. Further research into the mechanisms of the influence of gel substrates on plants, as well as the synthesis of new gel substrates with more pronounced properties to sorb and retain moisture is promising.

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Section: Introductionmentioning

confidence: 99%

Polymer Gel Substrate: Synthesis and Application in the Intensive Light Artificial Culture of Agricultural Plants

Panova,

Krasnopeeva,

Laishevkina

et al. 2023

Gels

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Mucus‐Mimicking Mucin‐Based Hydrogels by Tandem Chemical and Physical Crosslinking

Porfiryeva,

Zlotver,

Davidovich‐Pinhas

et al. 2024

Macromolecular Bioscience

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Mucosal tissues represent a major interface between the body and the external environment and are covered by a highly hydrated mucins gel called mucus. Mucus lubricates, protects and modulate the moisture levels of the tissue and has been capitalized in transmucosal drug delivery. Pharmaceutical researchers often use freshly excised animal mucosal membranes to assess mucoadhesion and muco‐penetration of pharmaceutical formulations which may struggle with limited accessibility and ethical questions. Aiming to develop a platform for the rationale study of the interaction of drugs and delivery systems with mucosal tissues, in this work we synthesize mucus‐mimicking mucin‐based hydrogels by the tandem chemical and physical crosslinking of 4% w/v mucin aqueous solutions. Chemical crosslinking is achieved with glutaraldehyde (0.3% and 0.75% w/v), while physical crosslinking by one or two freeze‐thawing cycles. Hydrogels after one freeze‐thawing cycle show water content of 97.6‐98.1%, density of 0.0529‐0.0648 g/cm3, and storage and loss moduli of ∼40‐60 Pa and ∼3‐5 Pa, respectively, that resemble the properties of native gastrointestinal mucus. The mechanical stability of the hydrogels increased over the number of freeze‐thawing cycles. Overall results highlight the potential of this simple, reproducible and scalable method to produce artificial mucus‐mimicking hydrogels for different applications in pharmaceutical research.This article is protected by copyright. All rights reserved

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Biosynthesized MgO@SnO2 nanocomposite and their modification with polyvinylpyrrolidone. Efficiency for removal of heavy metals and contaminants from industrial petroleum wastewater

Salmi,

Laouini,

Meneceur

et al. 2024

Clean Techn Environ Policy

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Engineering of PVA/PVP Hydrogels for Agricultural Applications

Cited by 8 publications

References 161 publications

Polymer Gel Substrate: Synthesis and Application in the Intensive Light Artificial Culture of Agricultural Plants

Polymer Gel Substrate: Synthesis and Application in the Intensive Light Artificial Culture of Agricultural Plants

Mucus‐Mimicking Mucin‐Based Hydrogels by Tandem Chemical and Physical Crosslinking

Biosynthesized MgO@SnO2 nanocomposite and their modification with polyvinylpyrrolidone. Efficiency for removal of heavy metals and contaminants from industrial petroleum wastewater

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