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Sigma-Aldrich Online Catalog Product List: Poly(vinylpyrrolidone)

N vinyl pyrrolidone synthesis essay - …

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Silver/poly(N-vinyl-2-pyrrolidone) nanocomposites ..

DMF: N,N-dimethylformamide; EDX: energy-dispersive X-ray; EG: ethylene glycol; PVP: poly(N-vinyl-2-pyrrolidone); SAED: selected area electron diffraction; SEM: scanning electron microscopy; TEM: transmission electron microscopy; XRD: X-ray diffraction.

29/11/2012 · Synthesis and photopolymerization of Tween 20 Methacrylate/N-vinyl-2 ..

In this communication, we describe a solvothermal process for the synthesis of uniform bismuth nanospheres in the presence of poly(N-vinyl-2-pyrrolidone) (PVP). In most cases, PVP was used as a protecting agent to cap and stabilize the particles to avoid aggregation in the solution []. It was also reported that PVP was used as reducing agent in the preparation of noble metallic nanostructures [,]. In this synthesis, PVP acts as both reducing and capping agent. To the best of our knowledge, there are few publications relevant to the synthesis of bismuth nanomaterials using PVP as a reducing agent.

1-Vinyl-2-pyrrolidone CAS 88-12-0 | 808518

Poly(N-Vinyl Pyrrolidone-b-Dimethylsiloxane) …

Uniform bismuth nanospheres were successfully prepared from bismuth nitrate in the presence of poly(N-vinyl-2-pyrrolidone) (PVP) by solvothermal process. The product was characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, selected area electron diffraction, and energy-dispersive X-ray. PVP plays a critical role both as a reducing agent and a capping agent in the formation of bismuth nanospheres. Shape and size of bismuth nanospheres could be tuned by changing the employed PVP/bismuth salt ratio. It was also found the solvent had an effect on the morphologies of bismuth nanomaterials. The possible formation and growth mechanism of bismuth nanospheres were also discussed and proposed to explain the reduction step.

A variety of hardening mountants is available which provide films possessing a range of hardness. They are based on water-soluble polymers such as poly(vinyl alcohol(PVOH) and poly (vinyl pyrrolidone)(PVP).

N-Vinyl-2-pyrrolidone, Cat# M-149 « …

N-Vinyl-2-pyrrolidone, Cat# M-149

N-Vinyl-2-Pyrrolidone (High Purity, 99.5% min.) - …
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  • 06/07/2005 · REGULAR ARTICLES

    Silver nanoparticles for wound dressings: electrochemical synthesis inside Poly(N-vinyl-2-pyrrolidone) hydrogel

  • N-Methyl-2-Pyrrolidone (NMP) | TDS | Eastman …

    N-Vinyl-2-Pyrrolidone (High Purity, 99.5% min.) - Monomers - 88-12-0 ..

  • N-Iodosuccinimide (NIS) - Organic chemistry

    Hydrogels from Chitosan and a Novel Copolymer Poly(i N/i-Vinyl-2-Pyrrolidone-i Co/i-Acrolein)

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