EFFECT OF STRESSES ON POLYMER OXIDATION. QUANTITATIVE ASPECTS. II. PLASTICS

Abstract

Abstract In the previous paper of this series we considered corrosive degradation of polydiene elastomers subjected to tensile stresses. In this paper other polymer materials will be considered, in particular, semicrystalline polymers in a highly elastic state, viz., high-density polyethylene (HDPE), low-density polyethylene (LDPE), isotactic polypropylene (PP), polyamides of different chemical structure, PE/PP mixtures, and a few others. Besides, data for polymers in the glassy state will also be presented, although they are of lesser interest in regard of the effect of structural strains on reactivity because of the long relaxation times involved.