Water retention and slow release studies of a salep-based hydrogel nanocomposite reinforced with montmorillonite clay

Olad, Ali; Zebhi, Hamid; Salari, Dariush; Mirmohseni, Abdolreza; Tabar, Adel Reyhani

doi:10.1039/c7nj03667a

Cited by 53 publications

(18 citation statements)

References 24 publications

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“…In past years, 2D nanomaterials have been applied in hydrogels as promising nanofillers with high surface area and unique electrical properties . These 2D nanomaterials include graphene oxide, nanoclay (e.g., laponite, montmorillonoid, hectorite), and metal sulfide nanosheets (e.g., MoS 2 ).…”

Section: Microstructure Design For High‐strength Hydrogelsmentioning

confidence: 99%

High‐strength hydrogels: Microstructure design, characterization and applications

Hua

Fei

2018

J Polym Sci B Polym Phys

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Hydrogels are a class of polymeric network materials embedded in a water-rich environment. They are widely applied in drug delivery, actuator, and sensor. However, conventional hydrogels encountered limits from their poor mechanical property. Recent researches in hydrogels have been focusing on mechanical enhancement, ranging from design of microstructures to adjustment of compositions in hydrogels. Here, the design and fabrication strategies of high-strength hydrogels, as well as major progress in their typical strength-support applications are systemically reviewed.

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Section: Microstructure Design For High‐strength Hydrogelsmentioning

confidence: 99%

High‐strength hydrogels: Microstructure design, characterization and applications

Hua

Fei

2018

J Polym Sci B Polym Phys

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“…As shown in Figure 2(b), in the case of collagen-g-p(AA-co-AMPS)-Fe(III), the new absorption peaks located at 1710 cm −1 (asymmetric stretching vibrations of COOH groups), between 900 and 1200 cm −1 (O C O stretching of ether groups and C O stretching of alcoholic groups) were characteristic peaks of collagen-g-p(AA-co-AMPS)-Fe (III). 22,23 In particular, disposed by Fe 3+ , the location and intensity of the stretching vibrations of the carboxyl groups shifted. New absorption peaks appeared at 1710 and 1561 cm −1 and may have arisen from the formation of carboxylate ions (COO − ).…”

Section: Preparation Mechanismmentioning

confidence: 99%

Characterization of slow‐release collagen‐g‐poly(acrylic acid‐co‐2‐acrylamido‐2‐methyl‐1‐propane sulfonic acid)–iron(III) superabsorbent polymer containing fertilizer

Wang

et al. 2018

J of Applied Polymer Sci

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A novel, slow‐release polymer containing phosphorous fertilizer was synthesized by the rapid coordination of iron ions with polymers after the microwave radiation polymerization of collagen, 2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid, and acrylic acid. We obtained an optimized collagen‐g‐poly(acrylic acid‐co‐2‐acrylamido‐2‐methyl‐1‐propane sulfonic acid) collagen‐g‐p(AA‐co‐AMPS)–Fe(III) polymer with great equilibrium swelling capacities of 2595 g/g in distilled water and 121 g/g in 0.9 wt % NaCl solution and an excellent sustained fertilizer release of about 30 days. In addition, for the collagen‐g‐p(AA‐co‐AMPS)–Fe(III) polymer, the effect of cations on its swelling followed the order K+ > Na+ > Mg2+ > Ca2+. The structure and morphology were characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, and scanning electron microscopy. Moreover, the collagen‐g‐p(AA‐co‐AMPS)–Fe(III) polymers emancipated the nutrients in a more controlled manner than collagen‐g‐p(AA‐co‐AMPS). The thermal stability, water absorbency, and good slow‐release of fertilizer provide the collagen‐g‐p(AA‐co‐AMPS)–Fe(III) polymer with great potential as a fertilizer‐carrying vehicle and an aquasorb to be applied in agriculture and horticulture. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47178.

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“…Hydrogels are three-dimensional polymer networks with high hydrophilicity, which can absorb and retain high amounts of water. [1][2][3][4] There are various biomedical, agricultural, and hygienic applications for hydrogels, which are significantly affected by their poor mechanical and water retention properties. 5,6 Also, some factors such as biodegradability and biocompatibility are very important for hydrogels used in agriculture, water treatment, hygienic products, and biomedical products.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical evaluation of nanocomposite hydrogels with covalently incorporated poly(vinyl alcohol) functionalized graphene oxide

Olad

Eslamzadeh

Mirmohseni

2019

J of Applied Polymer Sci

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To avoid the negative effect of graphene oxide (GO) nanosheets aggregation in aqueous solutions on physicochemical properties of GO incorporated nanocomposite hydrogels, poly(vinyl alcohol)-functionalized GO (GO-es-PVA) are synthesized and are used for preparation of nanocomposite hydrogels. By graft copolymerization of GO-es-PVA with poly(AA-co-AAm) chains, the nanocomposite hydrogel samples with covalently incorporated GO-es-PVA are achieved. FTIR spectroscopy, XRD analysis, and SEM and EDAX techniques confirm successful synthesis process. It is clear that GO-es-PVA content has significant effect on physicochemical properties of nanocomposite hydrogels, such as improvement of the water uptake properties, porosity, and gel strength. The hydrogel sample with 1:80 mass ratio of GO-es-PVA/AAm has the best physicochemical properties due to the optimum amount of GO-es-PVA, which gives the hydrogel proper viscoelasticity as well as fine porosity and water uptake rate. Interpenetration of PVA chains into the polymeric networks makes the movement of the polymer chains easier, which leads to softer polymeric networks. This phenomenon is called plasticizing effect. The plasticizing nature of PVA and its high hydrophilicity are the main reasons for the fine physicochemical properties.

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Water retention and slow release studies of a salep-based hydrogel nanocomposite reinforced with montmorillonite clay

Abstract: The synthesized nanocomposites slowly release fertilizer which can act as a high-efficiency NPK fertilizer formulation.

Cited by 53 publications

References 24 publications

High‐strength hydrogels: Microstructure design, characterization and applications

High‐strength hydrogels: Microstructure design, characterization and applications

Characterization of slow‐release collagen‐g‐poly(acrylic acid‐co‐2‐acrylamido‐2‐methyl‐1‐propane sulfonic acid)–iron(III) superabsorbent polymer containing fertilizer

Physicochemical evaluation of nanocomposite hydrogels with covalently incorporated poly(vinyl alcohol) functionalized graphene oxide

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