Synthesis and characterization of organic montmorillonite-polyvinyl alcohol-co-polyacrylic nanocomposite hydrogel for heavy metal uptake in water

Moh́sen, M.; Gomaa, Eman Zakaria; Mazaid, Nabila Ahmed; Mohammed, Reem

doi:10.3934/matersci.2017.5.1122

Cited by 12 publications

(8 citation statements)

References 15 publications

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“…The amount of gel fraction of each hydrogel indicated the degree of cross-linking, and an increase in this index is quite normal due to the increase in the amount of the cross-linker. The reason for this could be a gap created between the CNF and the physical barrier, which reduced network formation [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

Employing Cellulose Nanofiber-Based Hydrogels for Burn Dressing

et al. 2022

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The aim of this research was to fabricate a burn dressing in the form of hydrogel films constructed with cellulose nanofibers (CNF) that has pain-relieving properties, in addition to wound healing. In this study, the hydrogels were prepared in the form of film. For this, CNF at weight ratios of 1, 2, and 3 wt.%, 1 wt.% of hydroxyethyl cellulose (HEC), and citric acid (CA) crosslinker with 10 and 20 wt.% were used. FE-SEM analysis showed that the structure of the CNF was preserved after hydrogel preparation. Cationization of CNF by C6H14NOCl was confirmed by FTIR spectroscopy. The drug release analysis results showed a linear relationship between the amount of absorption and the concentration of the drug. The MTT test (assay protocol for cell viability and proliferation) showed the high effectiveness of cationization of CNF and confirmed the non-toxicity of the resulting hydrogels.

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Section: Resultsmentioning

confidence: 99%

Employing Cellulose Nanofiber-Based Hydrogels for Burn Dressing

et al. 2022

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“…The adsorption capabilities of organo-MMT loaded P(NIPAM) hydrogels gradually increase with the clay concentration, but plateaus above 2.5% organo-MMT (Figure 12) [84]. In the case of organo-MMT loaded PVA/AAc hydrogels, however, the adsorption of Cu 2+ , Co 2+ , and Ni 2+ increases significantly with the addition of organo-MMT [105].…”

Section: Adsorption Studymentioning

confidence: 99%

“…Na-MMT dispersed in carboxymethyl cellulosehydroxyethyl cellulose-acrylonitrile-linseed oil polyol (CHAP) hydrogel matrices have proven to be promising for pHdependent anticancer drug delivery [133]. For the adsorption of textile dyes such as methylene blue [107], crystal violet [86], and heavy metals [105] from industrial waste, nanocomposite hydrogels have proven to be more efficient than conventional hydrogels.…”

Section: Applicationsmentioning

confidence: 99%

A review on polymer nanocomposite hydrogel preparation, characterization, and applications

2021

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Nanocomposite hydrogels, made by incorporating nanoparticles into a hydrogel matrix, have been developed to fulfill the need for materials with enhanced and predictable mechanical properties and functionality. This review breaks down the process of preparing and characterizing nanocomposite hydrogels and looks at the various applications they can be used for. Through careful selection of the nanoparticle and hydrogel types, as well as the preparation method, the degree of crosslinking and the strength of the intermolecular interactions between the nanoparticles and the hydrogel matrix can be controlled. Once the nanomaterial is prepared, the morphology, gel content, thermal stability, and mechanical properties are investigated. By varying the concentrations of nanoparticles within the hydrogel matrix, nanocomposite hydrogels with optimal functionality and mechanical properties are produced. The optimized nanomaterial can then be used for its intended application(s); here the focus is on applications in the biomedical and dye adsorption fields. With further research, it is predicted that nanocomposite hydrogels will fulfill their potential to be used in practical, everyday applications.

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“…This double-network hydrogel has great potential in biomedical applications. A poly (vinyl alcohol)-and poly (acrylic acid)-based hydrogel was formulated and customized to a nanocomposite material by absorption of montmorillonite by the hydrogel matrix aided by gamma irradiation (Mohsen et al, 2017;Thombare et al, 2018). A poly acrylic acid-and poly acrylamide-based mechanico-chemical and pH responsive co-polymeric accusative system has been formulated to permit the antagonistic faction of the solution.…”

Section: Introductionmentioning

confidence: 99%

Gum katira-silver nanoparticle-based bionanocomposite for the removal of methyl red dye

Saruchi

Kumar²,

Bhatt³

et al. 2023

Front. Chem.

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The present study aimed to synthesize gum katira-silver nanoparticle-based bionanocomposite. Different characterization techniques were used to analyze the synthesized bionanocomposite, such as Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), thermo-gravimetric analysis (TGA), and transmission electronic microscopy (TEM). AgNPs were formed and were 6–20 nm in size. Thermo-gravimetric analysis showed that synthesized nanocomposites are more thermally stable than gum katira. All the reaction conditions, such as time, temperature, pH, solvent, amount of nanoparticles, the concentration of the initiator, crosslinker, and monomer were optimized with respect to swelling. The results showed that the highest percentage swelling (Ps) of Gk-cl-poly(AA) was 796%, and 867% of AgNPs were imbibed by Gk-cl-poly(acrylic acid)-AgNPs. Synthesized bionanocomposite was used as an adsorbent material for the adsorption of methyl red (MR) dye. The effects of different reaction conditions were also optimized to attain maximum adsorption of MR dye. The maximum dye adsorption through Gk-cl-poly(AA)-AgNPs bionanocomposite was 95.7%. Diverse kinetic and isotherm models were used to study the adsorption data. The R2 value was established as 0.987 and k2 was .02671. The greater R2 value of second-order kinetics over first-order kinetics suggested that MR adsorption by nanocomposite is best explained by pseudo-second-order kinetics, indicating that dye adsorption occurred through chemisorption. The R2 value was determined to be .9954. The correlation coefficient values of Gk-cl-poly(AA)-AgNPs were best fitted by the Freundlich adsorption isotherm. Overall, synthesized bionanocomposite is a proficient material for removing of MR dye from wastewater.

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Synthesis and characterization of organic montmorillonite-polyvinyl alcohol-co-polyacrylic nanocomposite hydrogel for heavy metal uptake in water

Cited by 12 publications

References 15 publications

Employing Cellulose Nanofiber-Based Hydrogels for Burn Dressing

Employing Cellulose Nanofiber-Based Hydrogels for Burn Dressing

A review on polymer nanocomposite hydrogel preparation, characterization, and applications

Gum katira-silver nanoparticle-based bionanocomposite for the removal of methyl red dye

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