Journal Article10.1007/S10965-014-0355-1
Antimicrobial alginate/PVA silver nanocomposite hydrogel, synthesis and characterization
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TL;DR: In this article, a superabsorbent hydrogel-silver nanocomposite based on polyvinyl alcohol (PVA) and sodium alginate (Na-Alg) was prepared using free radical polymerization in the presence of acrylamide (AAm) monomer.
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Abstract: Superabsorbent hydrogel-silver nanocomposite based on poly(vinyl alcohol) (PVA) and sodium alginate (Na-Alg) was prepared using free radical polymerization in the presence of acrylamide (AAm) monomer. The reactions were conducted under normal atmospheric conditions, using ammonium persulfate (APS) as an initiator and methylene bisacrylamide (MBA) as a crosslinking agent. The effect of reaction parameters such as MBA, AAm, and APS concentration as well as Na-Alg/PVA weight ratio on the water absorbency and the gel content of the hydrogels were studied. Evidence of grafting was obtained by comparing the FT-IR spectra and the TGA of the initial substrates with that of the superabsorbent hydrogel. Furthermore, Ag nanoparticles were synthesized in a green synthesis process. Highly stable silver nanoparticles were obtained with the hydrogel networks as nanoreactor via in situ reduction of silver nitrate by using sodium borohydride as a reducing agent. The hydrogel silver nanocomposite was fully characterized by using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA). The effect of cross-link density, and Na-Alg/PVA weight ratio on the loading and the size of nanoparticles were studied. The antibacterial activity of the silver nanocomposite hydrogel was investigated as well.
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References
Multipurpose smart hydrogel systems
TL;DR: New hydrogel systems and nanocomposites based on acrylic monomers with incorporated nanosized colloidal silver, hydroxyapatite and carbon nanotubes with a new set of properties have been obtained and examined.
166
Biodegradability, antimicrobial activity and properties of PVA/PVP hydrogels prepared by γ-irradiation
H. L. Abd El-Mohdy,S. Ghanem +1 more
TL;DR: In this paper, Fourier transform infrared spectroscopy and differential scanning calorimetry were used to confirm the conclusion on miscibility of polyvinyl alcohol/polyvinyl pyrrolidone (PVA/PVP) blends.
161
Superabsorbent hydrogel nanocomposites based on starch- g -poly(sodium acrylate) matrix filled with cellulose nanowhiskers
Cristiane Spagnol,Francisco H. A. Rodrigues,Antonio G.B. Pereira,André R. Fajardo,Adley F. Rubira,Edvani C. Muniz +5 more
TL;DR: In this article, a set of experiments were performed to evaluate the influence of some factors such as NaAc/starch mass ratio, crosslinker, and nanowhiskers amount in the swelling capacity and swelling kinetics.
134
Stimuli-responsive hydrogel-silver nanoparticles composite for development of localized surface plasmon resonance-based optical biosensor.
TL;DR: It was found that the LSPR-based optical enzyme biosensor could be used to specifically determine glucose concentrations and has the potential to be applied in cost-effective, highly simplified, and highly sensitive test kits for medical applications.
131
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TL;DR: In this paper, a thermo-sensitive comb-like copolymer was synthesized by grafting PNIPAAm-COOH with a single carboxy end group onto aminated alginate (AAlg) through amide bond linkages.
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