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The Control of Thermal and Radiation Stability of Polypropylene Containing Calcium Carbonate Nanoparticles
Author(s) -
Zaharescu Traian,
Jipa Silviu,
Kappel Wilhelm,
Supaphol Pitt
Publication year - 2006
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200651044
Subject(s) - stearic acid , nanoparticle , polypropylene , materials science , thermal stability , calcium carbonate , chemical engineering , irradiation , filler (materials) , nuclear chemistry , composite material , chemistry , nanotechnology , physics , nuclear physics , engineering
Thermal and γ radiation stability of iPP containing CaCO 3 nanoparticles were investigated by oxygen uptake procedure at 190 °C. The loading of iPP matrix was maximum 25% (w/w). The behavior on thermal oxidation was investigated for two formulations of iPP compounds differing by the surface characteristics of nanoparticles (i.e. uncoated and stearic acid‐coated filler). Three irradiation doses (5, 15 and 25 kGy) were applied. The efficient protection of stabilizers that are present in the as‐prepared formulations was emphasized by proper values of the kinetic parameters obtained for oxidation. The contribution of CaCO 3 nanoparticles to the oxidative process of iPP is discussed.