RT Journal Article
T1 Improvement of thermal protection in recycled polyolefins through hybrid mesoporous silica-antioxidant particles
A1 Blázquez-Blázquez, Enrique
A1 Barranco-García, Rosa
A1 Díez-Rodríguez, Tamara
A1 Posadas, Pilar
A1 Pérez, Ernesto
A1 Cerrada, María
AB The deficient management of plastic waste has caused a serious worldwide environmental problem. Thus, one of the main challenges for the industry in the plastics sector in contributing to sustainability and a circular economy consists of providing a subsequent service life to this waste. For that purpose, the appropriate incorporation of antioxidants will play a key role in preventing or postponing the degradation of plastic waste, where the formation of radicals is initiated during its previous lifetime by the action of degrading agents. Functionalized particles, based on mesoporous MCM-41 silica with Irganox 1076, were prepared with two different protocols and were further incorporated into a material containing virgin PP and 30 wt.% of recycled PP, with the purpose of guaranteeing thermal stability during its next service life. A very significant increase in the thermal stability of the resulting composites was found, attributable to the synergistic action between the Irganox 1076 antioxidant and the MCM-41 particles. In addition, the presence of hybrid particles leads to an important nucleating effect for the crystallization of PP. Moreover, a reinforcing role was also played by these modified mesoporous silicas in the resultant systems. The presented methodology constitutes, therefore, a promising strategy for contributing to the circular economy—since the synergy between the Irganox 1076 antioxidant and MCM-41 particles was found to play an important role in the ultimate performance of recycled polyolefins
SN 2313-4321
YR 2024
FD 2024
LK https://hdl.handle.net/20.500.14352/105913
UL https://hdl.handle.net/20.500.14352/105913
LA eng
NO Recycling 2024, 9(1), 3; https://doi.org/10.3390/recycling9010003
DS Docta Complutense
RD 10 abr 2025