1-Propene, homopolymer, isotactic
- Monomer Formula: C3H6
- Monomer Molecular weight: 42.0797
- CAS Registry Number: 25085-53-4
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Polypropylene, isotatic
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Condensed phase thermochemistry 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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°solid,1 bar | 16.71 | cal/mol*K | N/A | Grebowicz, Lau, et al., 1984 | |
| S°solid,1 bar | 19.31 | cal/mol*K | N/A | Grebowicz, Lau, et al., 1984 | glass phase |
| S°solid,1 bar | 17.22 | cal/mol*K | N/A | Dainton, Evans, et al., 1962 | glass phase; When extrapolated to 100% crystallinity, the entropy is 61.92 J/mol*K. |
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 16.49 | 298.15 | Grebowicz, Lau, et al., 1984 | T = 0 to 500 K. |
| 21.05 | 298.15 | Grebowicz, Lau, et al., 1984 | glass phase; T = 0 to 500 K. |
| 17.3 | 299.8 | Passaglia and Kevorkian, 1963 | glass phase; T = 85 to 500 K. Unsmoothed experimental datum. |
| 18.45 | 298.15 | Dainton, Evans, et al., 1962 | glass phase; T = 20 to 310 K. |
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 |
|---|---|---|---|---|
| 260. | crystaline, I | glass | Dainton, Evans, et al., 1962 |
Enthalpy of phase transition
| ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 1.894 | 267. | crystaline | glass | Passaglia and Kevorkian, 1963 |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Grebowicz, Lau, et al., 1984
Grebowicz, J.; Lau, S.-F.; Wunderlich, B.,
The thermal properties of polypropylene,
J. Polymer Science: Polymer Symp., 1984, 71, 19-37. [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 IV. Stereospecific poly-a-olefines,
Polymer, 1962, 3, 286-296. [all data]
Passaglia and Kevorkian, 1963
Passaglia, E.; Kevorkian, H.K.,
Specific heat of atactic and isotactic polypropylene and the entropy of the glass,
J. Appl. Phys., 1963, 34(1), 90-97. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) Ttrs Temperature of phase transition ΔHtrs Enthalpy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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