Abstract
Calculated vapor pressures have been used to estimate the composition of the vapor over an equimolar mixture of linear alkanes and to make inferences about the effects of pressure on the thermal degradation of polyethylene as studied using thermogravimetry. The troublesome bubbling in molten PE degrading under vacuum conditions has been related to the boiling out of molecules in the range C 30 to >C 80. The effect of pressure in lowering the apparent overall activation energy has been ascribed to contributions from the lalent heats of vaporization of molecules in the range C 15 to ∼C 30.
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