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1,3-Butadiene, 2-methyl-, homopolymer


Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: E.S. Domalski and E.D. Hearing

Enthalpy of phase transition

DeltaHtrs (kJ/mol)Temperature (K)Initial PhaseFinal PhaseReferenceComment
4.761284.crystalineamorphousBekkedahl and Matheson, 1935Corrected for premelting, 255 to 284 K. Value per C5H8 unit. 'Fusion' actually transition to amorphous form.

Entropy of phase transition

DeltaStrs (J/mol*K)Temperature (K)Initial PhaseFinal PhaseReferenceComment
16.8284.crystalineamorphousBekkedahl and Matheson, 1935Corrected

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Bekkedahl and Matheson, 1935
Bekkedahl, N.; Matheson, H., Heat capacity, entropy and free energy of rubber hydrocarbon, J. Res., 1935, NBS 15, 503-515. [all data]


Notes

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