Metal-polymer nanocomposites are of great interest and mainly focused on advanced catalytic and sensor applications. Resulting from this, new copolymers composed of poly(2-isopropenyl-2-oxazoline) (PIPOx) and poly(N-vinylpyrrolidone) (PNVP) segments were prepared from highly water soluble 2-isopropenyl-2- oxazoline (IPOx) and N-vinylpyrrolidone (NVP) monomers. Finally, silver polymer nanocomposites of poly(2-isopropenyl-2-oxazoline-co-N-vinylpyrrolidone) were synthesized and reporting for the first time. All polymerizations were done in an aqueous phase with potassium persulfate as an initiator at 60 °C. The reaction time varied from 1 to 6 h in accordance with stoichiometric ratios of PIPOx and PNVP, leading to insoluble copolymers; which are termed as PIPOx_PNVP (75:25), PIPOx_PNVP (50:50), PIPOx_PNVP (25:75) and PIPOx_PNVP (10:90). Only, PIPOx_PNVP (10:90) showed adequate swelling behavior in water and some other organic solvents. All the polymers were distinguished by various physicochemical spectroscopic techniques such as UV/Visible spectroscopy, Scanning electron microscope (SEM), Transmission electron microscopy (TEM), X-ray diffraction (XRD), and FTIR analysis. Thermogravimetry (TGA) and Differential scanning calorimetry (DSC) were used to investigate thermal stability of the samples. The metalo-polymer nanocomposites (PIPOx_PNVP-SNCs) showed an apparently improved stability even when the composites were stored in air, at room temperature. The PIPOx_PNVP-SNCs showed a remarkable catalytic activity during the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) in the presence of sodium borohydride.
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This work was principally supported by the following Czech-Slovak bi-lateral co-operation projects: MSMT-7 AMB14SK026 (Ministry of Education, Youth and Sports of the Czech Republic) and APVV- SK-CZ-2013-0206 (Slovak Research and Development Agency). Authors are also gratefully acknowledging the financial support from the Ministry of Education, Youth and Sports of the Czech Republic-NPU Program I (LO1504). J.K is thankful Slovak Grant Agency VEGA for financial support in the project No: 2/0124/18.
Conflict of interest
The authors declare that they have no competing interests.
The original version of this article was revised: Due to an oversight during typesetting stage, many subscripts and superscripts after unit abbreviations were captured as normal text (i.e. NaBH4 instead of the correct NaBH4, Ag+ instead of the correct Ag+, C0 instead of the correct C0, cm-1 instead of the correct cm-1, Mt and Md instead of the correct Mt and Md, 1290C instead of 1290C, etc.). The corrected are now shown here.
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Palem, R.R., Ganesh, S.D., Saha, N. et al. ‘Green’ synthesis of silver polymer Nanocomposites of poly (2-isopropenyl-2- oxazoline-co- N-vinylpyrrolidone) and its catalytic activity. J Polym Res 25, 152 (2018). https://doi.org/10.1007/s10965-018-1548-9
- Green chemistry
- Metal-polymer nanocomposites