Polypropylene/polyhedral oligomeric silsesquioxane nanocomposites – study of free volumes, crystallinity degree and mass flow rate

A. Niemczyk; K. Dziubek; K. Czaja; R. Szatanik; M. Szołyga; M. Dutkiewicz; B. Marciniec

doi:10.14314/polimery.2016.610

Published : 2021-01-24

Vol. 61 No. 9 (2016)

Polypropylene/polyhedral oligomeric silsesquioxane nanocomposites – study of free volumes, crystallinity degree and mass flow rate

A. Niemczyk K. Dziubek K. Czaja R. Szatanik M. Szołyga M. Dutkiewicz B. Marciniec

DOI: https://doi.org/10.14314/polimery.2016.610

Abstract

Polypropylene/polyhedral oligomeric silsesquioxane (PP/POSS) nanocomposites were prepared by the melt blending method. Positron Annihilation Lifetime Spectroscopy (PALS) was used to study the effects of the structure and of the amount of POSS on the free volumes in PP. The PALS parameters: o-Ps lifetime and its intensity, were compared to the crystallinity degree and to the mass flow rate (MFR) of nanocomposites. The presence of POSS nanofillers affected the PP microstructure and the size and number of free volumes in the polymer. The crystallinity degree was decreased and the intensity of o-Ps component was increased by increasing POSS contents. The MFR values increased for nanocomposites, thus POSS nanoparticles can act as plasticizers and generate more free volumes in PP.

Keywords

nanocomposites ; polypropylene ; polyhedral oligomeric silsesquioxanes (POSS) ; positron annihilation lifetime spectroscopy (PALS) ; crystallinity degree ; mass flow rate polipropylen ; poliedryczne oligomeryczne silseskwioksany (POSS) ; spektroskopia czasów życia pozytonów (PALS) ; stopień krystaliczności ; masowy wskaźnik szybkości płynięcia ; nanokompozyty

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Niemczyk, A., Dziubek, K., Czaja, K., Szatanik, R., Szołyga, M., Dutkiewicz, M., & Marciniec, B. (2021). Polypropylene/polyhedral oligomeric silsesquioxane nanocomposites – study of free volumes, crystallinity degree and mass flow rate. Polimery, 61(9), 610-615. https://doi.org/10.14314/polimery.2016.610

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A. Niemczyk help@libcom.pl

Affiliation
University of Opole, Faculty of Chemistry, Oleska 48, 45-052 Opole, Poland

K. Dziubek

Affiliation
University of Opole, Faculty of Chemistry, Oleska 48, 45-052 Opole, Poland

K. Czaja

Affiliation
University of Opole, Faculty of Chemistry, Oleska 48, 45-052 Opole, Poland

R. Szatanik

Affiliation
University of Opole, Faculty of Mathematics, Physics and Computer Science, Institute of Physics, Oleska 48, 45-052 Opole, Poland

M. Szołyga

Affiliation
Adam Mickiewicz University in Poznań, Faculty of Chemistry, Umultowska 89B, 61-614 Poznań, Poland

M. Dutkiewicz

Affiliation
Adam Mickiewicz University in Poznań, Centre for Advanced Technologies, Umultowska 89C, 61-614 Poznań, Poland

B. Marciniec

Affiliation
Adam Mickiewicz University in Poznań, Centre for Advanced Technologies, Umultowska 89C, 61-614 Poznań, Poland