E. Foldes, TRANSPORT OF SMALL MOLECULES IN POLYOLEFINS .2. DIFFUSION AND SOLUBILITY OF IRGANOX 1076 IN ETHYLENE POLYMERS, Journal of applied polymer science, 48(11), 1993, pp. 1905-1913
Diffusion coefficient and solubility of Irganox 1076 antioxidant in di
fferent ethylene polymers (LDPE, LDPE/LLDPE blend, and EVA) were studi
ed between 45 and 80-degrees-C. For correct evaluation of the results,
physical characteristics of the polymers and the additive were determ
ined as a function of temperature. Good correlation was found between
the diffusion rate of the additive and the free volume of the noncryst
alline phase in the polymer. Measured solubilities were much higher th
an reported in the literature.