No abstract

synopsisThe melting points of t,hree polyethylenes differing in molecular weight distribution from 47,000 to 147,000 were determined as 141OC f 0.5OC by dilatometric techniques. Sample preparation procedures were developed to ensure uniform thermal history prior to measuring length as a function of temperature in a precision dilatometer. The specific volume data were reproducible within 0.02%, reflecting the careful annealing procedure used and the extended time allowed for equilibrium to be attained.

No abstract

No abstract