trans-1,4-Polybutadiene
- Monomer Formula: C4H6
- Monomer Molecular weight: 54.0904
- CAS Registry Number: 25038-44-2
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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
Temperature of phase transition
| Ttrs (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|
| 437. | crystaline, I | liquid | Grebowicz, Aycock, et al., 1986 |
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 7.980 | 356. | crystaline, II | crystaline, I | Grebowicz, Aycock, et al., 1986 | Fully ordered/conformationally disordered transition. |
| 3.456 | 317. | crystaline, II | crystaline, I | Dainton, Evans, et al., 1962 |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 21.9 | 356. | crystaline, II | crystaline, I | Grebowicz, Aycock, et al., 1986 | Fully |
| 10.8 | 317. | crystaline, II, Solid | crystaline, I, solid transition is a linear to helical crystal structure | Dainton, Evans, et al., 1962 |
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.
Grebowicz, Aycock, et al., 1986
Grebowicz, J.; Aycock, W.; Wunderlich, B.,
Heat capacities of 1,4-polybutadienes,
Polymer, 1986, 27, 575-582. [all data]
Dainton, Evans, et al., 1962
Dainton, F.S.; Evans, D.M.; Hoare, F.E.; Melia, T.P.,
Thermodynamic functions of linear high polymers. Part V. cis- and trans-1,4-Polybutadiene,
Polymer, 1962, 3, 297-309. [all data]
Notes
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- Symbols used in this document:
Ttrs Temperature of phase transition ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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