1. Definitions

Stabilization is any modification of a material designed to increase its chemical stability under given conditions. Stabilization can be :

internally, it is the very structure of the polymer that is modified by copolymerization, grafting, substitution, etc. ;
external; it is provided by additives generally incorporated during shaping, possibly in the form of a masterbatch.

Internal stabilization is mainly used to slow down or inhibit the thermal degradation of polymers breaking down in chain reactions.

Example

for depolymerization (see §

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Definitions

Bibliography

(1) - PFAENDNER (R.) - How will additives shape the future of plastics ? - Polymer Degradation and Stability, vol. 91(9), p. 2249-2256 (2006).
(2) - CARTA (D.), CAO (G.), D'ANGELI (C.) - Chemical recycling of poly(ethylene terephthalate) (pet)...