Antioxidants interrupt the degradation process in different ways, according to their
structure. The major classifications of antioxidants are listed below:
Primary Antioxidants, mainly
acting as chain-breaking antioxidants, react rapidly with peroxy radicals (ROO*).
reacting with hydroperoxides (ROOH) to yield non-radical, non-reactive products,
are frequently called hydroperoxide decomposers.
combining both primary and secondary antioxidant functions in one compound, have
only recently become available
of scavenging C-radicals, act as both primary and secondary antioxidants.
Carbon-Centered Radical Scavengers,
effective in trapping alkyl radicals, provides powerful processing stability.