Enhanced removal of crystal violet from aqueous solution using carrageenan hydrogel nanocomposite/MWCNTs

Inorganic Chemistry Communications, Journal Year: 2024, Volume and Issue: 167, P. 112803 - 112803

Published: July 2, 2024

Language: Английский

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Preparation of reversible temperature sensitive acrylamide terpolymer hydrogel for cascade drug loadings

Journal of Macromolecular Science Part A, Journal Year: 2025, Volume and Issue: 62(2), P. 187 - 199

Published: Jan. 20, 2025

As a drug delivery system with vast potential applications, hydrogels have garnered significant attention due to their unique loading mechanisms and effectiveness. In this paper, novel reversible thermosensitive hydrogel polymer, synthesized through copolymerization of mono-6-allyl-β-cyclodextrin, N-isopropylacrylamide, acrylamide, is introduced. This polymer formed three-dimensional network structure in water, featuring β-cyclodextrin hydrophobic cavities. The encapsulated molecules could be slowly progressively released from both the IR XRD analysis confirmed successful encapsulation target molecules, sodium salicylate naproxen sodium, within cavity its space. Specifically, when mass ratio N-isopropylacrylamide/acrylamide/mono-6-allyl-β-cyclodextrin was 9.8/0.2/0.5, demonstrated an initial gelation temperature 34.9 °C final 37 °C. expansion rate blank slightly higher than that drug-loaded hydrogel. Both drugs undergo sustained release hydrogel, adhering Fick's diffusion law, ensuring consistent 8 h maintaining for over 24 h, regardless rate. Within 30 days, degradation PBS exceeded 15%, while presence lysozyme more 40%. These properties render versatile candidate targeted biomedical offering strategies treating chronic diseases other conditions.

Language: Английский

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Taguchi method optimisation for synthesising a novel Fe ₃ O ₄ @Sodium alginate-g-copolymer for enhanced methylene blue adsorption: optimisation, kinetics, and isotherm analyses

International Journal of Environmental & Analytical Chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 28

Published: Dec. 11, 2024

This research paper includes a novel hydrogel as an adsorbent prepared via free radical polymerisation of sodium alginate-grafting-poly (N-isopropylacrylamide-co-hydroxy ethyl acrylamide-co-2-Acrylamido-2-methylpropane sulphonic acid) (HGs). Employing the Taguchi method, optimal concentrations monomers, alginate, initiator, and crosslinking agent were determined to achieve maximum swelling ratio for incorporation Fe2+ Fe3+ ions produce Fe3O4/HGS magnetic nanocomposites (MGHs) shown in Scheme 1. HGS MGHs characterised using various techniques, including infrared absorption spectrum (FTIR), field emission scanning electron microscope (FESEM), atomic force (AFM), transmission (TEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), Brunauer–Emmett–Teller (BET), Vibrating‑Sample Magnetometer (VSM). The study compared behaviours at different pH values both adsorbents. point zero charge PZC was studied understand adsorption behaviour, which equal 5.44 adsorbent. Adsorption kinetics exhibited pseudo-second-order behaviour after determining adsorbent's effective weight, is 0.002 g, equilibrium time, 60 min. isotherm showed good agreement with Langmuir Dubinin–Radushkevich models. Thermodynamic parameters calculated temperatures (5–35 °C), indicating physisorption. While removal percent Mb dye 95% Qe = 474.7 mg/g, conditions Response Surface Methodology (RSM) analysed through Analysis Variance (ANOVA). Results demonstrated that increases increasing temperature, confirming endothermic nature process. also investigated Reusability, high efficiency five cycles.

Language: Английский

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Xanthan gum/ZrMOF biodegradable gel fertilizer: Sustainable water retention and crop growth

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: unknown, P. 138969 - 138969

Published: Dec. 1, 2024

Language: Английский

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