1,4-Benzenedicarboxylic acid, polymer with 1,4-butanediol


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: Eugene S. Domalski and Elizabeth D. Hearing

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Reference Comment
7.6004498.0Karyakin and Shvetsova, 1982Extrapolated to 100% crystallinity. H = 17500 J/mol Actual measurement for 55.5% crystallinity.

Entropy of fusion

ΔfusS (cal/mol*K) Temperature (K) Reference Comment
15.3498.0Karyakin and Shvetsova, 1982Extrapolated

Temperature of phase transition

Ttrs (K) Initial Phase Final Phase Reference Comment
248.crystaline, IIIcrystaline, IICheng, Pan, et al., 1988Glass transition for amorphous sample.
320.crystaline, IIcrystaline, ICheng, Pan, et al., 1988Glass transition for semicrystalline sample.
518.crystaline, IliquidCheng, Pan, et al., 1988 

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.

Karyakin and Shvetsova, 1982
Karyakin, N.V.; Shvetsova, K.G., Thermodynamics of reactions of 1,4-butanediol with terephthalic acid and its derivatives, Deposited Doc. SPSTL 861 Khp-D82, 1982, 14pp. [all data]

Cheng, Pan, et al., 1988
Cheng, S.Z.D.; Pan, R.; Wunderlich, B., Thermal analysis of poly(butylene terephthalate) for heat capacity, rigid-amorphous content, and transition behavior, Makromol. Chem., 1988, 189, 2443-2458. [all data]


Notes

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