New silver nanocomposites (AgNCs) based on copolymers of N-methyl-2-azanorbornene-5 (MAN), N-benzyl- 2-azanorbornene-5 (BAN), N-allyl-2-azanorbornene-5 (AAN) and N-(2-azanorbornene-5)methylacetate (MAAN) with N-vinylpyrrolidone (VP) have been developed. The reduction ions into nanoparticles was achieved using NaBH4 as reducing agent. UV- spectroscopy scanning electron microscopy techniques were...

Poly (vinylpyrrolidone)-grafted silica as an organic-inorganic hybrid material was used as an effective heterogeneous polymeric cosolvent catalyst in organic reactions. This modified silica catalyzed nucleophilic displacement of alkyl halides for easy preparation of alkyl thiocyanates, alkyl cyanides, alkyl azides and alkyl aryl ethers. Furthermore, the catalyst was applied for the conversion o...

A composite based on poly(N-vinylpyrrolidone) (PVP) and sodium bentonite was prepared by a simple method. Structural characterizations of the bentonite and the composite were performed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The TGA analysis showed a low loading of the polymer in the bentonite. XRD analysis confirmed a mod...

tris(diethylamino)diallylaminophosphonium tetrafluoroborate (DAAP-BF4) and chloride (DAAP-Cl) with N-vinylpyrrolidone (VP) were developed. The reduction of silver ions into nanoparticles was achieved using NaBH4 as a reducing agent. UV-spectroscopy scanning electron microscopy techniques used to characterize the formation in copolymers. average particle size ranged from 10 20 nm, corresponding ...

In this paper, the morphology, roughness and nano structural properties of SiO2/Poly Vinyl Pyrrolidone  synthesized with sol gel method,  characterized by using scanning electron microscopy, atomic force microscopy and GPS132A techniques.The main material taken from oxide silicon with weight percentage of 20, 40, 60, 80 and from poly vinyl pyrrolidone with percentages of 80, 60, 40, 20 is synth...