Extrapolation of the Orthorhombic n-Paraffin Melting Properties to Very Long Chain Lengths
- 15 May 1962
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 36 (10), 2578-2582
- https://doi.org/10.1063/1.1732337
Abstract
An analysis of the equation TM =T 0 (n+a) / (n+b) is made in order to determine the convergence temperature T 0 of the melting temperatures of the n‐paraffins from C 44 to C 100. A good fit is obtained using T 0=414.3°K, a=—1.5, and b=5.0. This value of T 0 (414.3°K=141.1°C) has an estimated total uncertainty of ±2.4°K and is proposed as the correct value of the equilibrium melting temperature of polyethylene. It is shown that presently available data do not permit accurate extrapolation of the n‐paraffin heats and entropies of fusion to the polymer limit.Keywords
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