Abstract
AbstractThe results of heat capacity measurements (over the temperature range 200–500°K) on an ethylene/isotactic propylene block copolymer (containing 12 mol‐% ethylene), which had been subjected to different doses of gamma radiation (0–1,000 Mrads) at 298°K, are described. After irradiation a single endotherm replaces the two observed with the unirradiated sample. The dependence of both the enthalpy and entropy of fusion on radiation dose is similar to that observed previously with isotactic polypropylene.
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