TY - JOUR
T1 - Antioxidant behavior of a novel sulfur-bearing hindered phenolic antioxidant with a high molecular weight in polypropylene
AU - Wang, Xiaofeng
AU - Wang, Bibo
AU - Song, Lei
AU - Wen, Panyue
AU - Tang, Gang
AU - Hu, Yuan
N1 - Funding Information:
The work was financially supported by National Basic Research Program of China (973 Program) ( 2012CB719701 ), National Natural Science Foundation of China (No. 51036007 ), China Postdoctoral Science Foundation ( 2012M511418 ) and National Natural Science Foundation of China ( 51203146 ).
PY - 2013/9
Y1 - 2013/9
N2 - A novel sulfur-bearing hindered phenolic antioxidant with a molecular weight of 1305.9 (SAO) was successfully synthesized via thiol-acrylate Michael addition reaction and its structure was clarified by nuclear magnetic resonance (NMR) and fourier transform infrared spectra (FTIR). The short-term oxidation induction time (OIT) of polypropylene (PP) compounds obtained at 210 C showed that the OIT value of SAO-containing PP was higher than that of PP using Chinox 1035 with a molecular weight of 642.9 as a stabilizer. Long-term accelerated thermal aging test of PP compounds in an air oven at 150 C, however, exhibited that the aging resistance of SAO-stabilizing PP was inferior to that of 1035-containing PP, quite contrary to their respective short-term effect on PP stabilization. The possible reasons of this contradiction were discussed from the viewpoint of the antioxidants' molecular structure and the limitations of the OIT approach in lifetime prediction.
AB - A novel sulfur-bearing hindered phenolic antioxidant with a molecular weight of 1305.9 (SAO) was successfully synthesized via thiol-acrylate Michael addition reaction and its structure was clarified by nuclear magnetic resonance (NMR) and fourier transform infrared spectra (FTIR). The short-term oxidation induction time (OIT) of polypropylene (PP) compounds obtained at 210 C showed that the OIT value of SAO-containing PP was higher than that of PP using Chinox 1035 with a molecular weight of 642.9 as a stabilizer. Long-term accelerated thermal aging test of PP compounds in an air oven at 150 C, however, exhibited that the aging resistance of SAO-stabilizing PP was inferior to that of 1035-containing PP, quite contrary to their respective short-term effect on PP stabilization. The possible reasons of this contradiction were discussed from the viewpoint of the antioxidants' molecular structure and the limitations of the OIT approach in lifetime prediction.
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U2 - 10.1016/j.polymdegradstab.2013.05.019
DO - 10.1016/j.polymdegradstab.2013.05.019
M3 - Article
AN - SCOPUS:84881138578
SN - 0141-3910
VL - 98
SP - 1945
EP - 1951
JO - Polymer Degradation and Stability
JF - Polymer Degradation and Stability
IS - 9
ER -