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D. Hybiak, J. Garbarczyk

Silver nanoparticles in isotactic polypropylene (iPP). Part I. Silver nanoparticles as metallic nucleating agents for b-iPP polymorph (in English)

Polimery 2014, No 7-8, 585


DOI: dx.doi.org/10.14314/polimery.2014.585

Summary

Isotactic polypropylene (iPP) nanocomposites containing 0.1, 0.2, 0.4 and 0.6 wt % of silver nanoparticles (nAg) were prepared by melt compounding in a one-screw extruder. Selected samples were isothermally recrystallized at different temperatures 50, 75, 100, 125, 130 and 135 °C, and under non-isothermal conditions. The size of the silver particles dispersed in the iPP matrix were estimated by ultraviolet/visible spectroscopy (UV-VIS). The effects of nAg additions on the structure of the iPP were studied by wide angle X-ray scattering (WAXS) and differential scanning calorimetry (DSC) techniques. The results clearly indicate that the addition of nAg induces the formation of the ß-iPP polymorph. It is shown that the relative amount of the b form in the recrystallized nanocomposites depends on both the concentration of silver nanoparticles and thermal conditions of recrystallization.


Key words: isotactic polypropylene, silver nanoparticles, polymorphism

e-mail: jozef.garbarczyk@put.poznan.pl

D. Hybiak, J. Garbarczyk (362.2 KB)
Silver nanoparticles in isotactic polypropylene (iPP). Part I. Silver nanoparticles as metallic nucleating agents for B-iPP polymorph