Technological aspects of phenolic antioxidants interactions with dicumyl peroxide in the processes
of polyolefins' crosslinking
Polimery 2005, No 1, 43
Results of UV/VIS investigations of the interactions between dicumyl peroxide and two commercial phenolic antioxidants, used in the processes of polyolefins' crosslinking, were presented. It was found that at temperature as low as 90°C, significantly lower than the temperature of rapid decomposition of peroxide investigated, the reactions between peroxide and phenolic antioxidant proceed. As a result, the colored compounds are formed what can be undesirable in some applications of crosslinked polyolefins. These reactions undergo in an air or nitrogen atmosphere. Presence of oxygen intensifies their courses. Results of the work can be useful in practice because disadvantageous phenomena can be minimized by proper selection of parameters of technological process.
Key words: polyolefins, peroxides, antioxidants, interactions, UV/VIS spectrophotometry
Technological aspects of phenolic antioxidants interactions with dicumyl peroxide in the processes of polyolefins' crosslinking