Ethene, homopolymer
- Monomer Formula: CH2
- Monomer Molecular weight: 14.0266
- CAS Registry Number: 9002-88-4
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Polymer; Polyethylen wax; polyethylene wax; Ersatzbrennstoff (EBS); high density polyethylene; Medium Density Polyethylene; Polyethylene (PE); Epolene Wax; Polyethylene; polyethyleen foil; ethylenpolymere
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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 | 5.9 ± 0.6 | cal/mol*K | AVG | N/A | Average of 14 out of 15 values; Individual data points |
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 6.19 | 298.15 | Steele, 1978 | |
| 5.968 | 298.15 | Chang, 1976 | T = 5 to 380 K. Value per monomer unit. |
| 7.696 | 298.15 | Chang, Westrum, et al., 1975 | T = 5 to 350 K. Values per CH2 unit. |
| 5.925 | 298.15 | Chang, Westrum, et al., 1975 | T = 5 to 350 K. Values per CH2 unit. |
| 5.402 | 298.15 | Chang, 1974 | T = 5 to 360 K. Value per monomer unit. |
| 5.492 | 298.15 | Chang, 1974 | T = 5 to 360 K. Value per monomer unit. |
| 5.727 | 298.15 | Chang, 1974 | T = 5 to 360 K. Value per monomer unit. |
| 7.218 | 298.15 | Chang and Bestul, 1973 | T = 2 to 360 K. Values per unit formula weight. |
| 7.232 | 298.15 | Chang and Bestul, 1973 | T = 2 to 360 K. |
| 6.138 | 298.15 | Chang and Bestul, 1973 | T = 2 to 360 K. Values per unit formula weight. |
| 5.229 | 298.15 | Wunderlich, 1965 | T = 180 to 410 K. Values per gram formula weight. |
| 6.972 | 300. | Passaglia and Kevorkian, 1963 | T = 90 to 415 K. |
| 5.848 | 300. | Passaglia and Kevorkian, 1963 | T = 90 to 433 K. |
| 6.283 | 298.15 | Dainton, Evans, et al., 1962 | T = 20 to 310 K. Data for "Marlex 50" (low pressure) polythene. |
| 6.219 | 298.15 | Dainton, Evans, et al., 1962 | T = 20 to 310 K. Data for "Rigidex 50" (low pressure) polythene. |
| 7.761 | 298.15 | Dainton, Evans, et al., 1962 | T = 90 to 300 K. Data for "W.N.C. 18" (high pressure) polythene. |
| 7.574 | 300. | Warfield and Petree, 1962 | T = 10 to 320 K. Calculated. Conventional high pressure polyethylene. |
| 5.863 | 300. | Wunderlich, 1962 | T = 1 to 420 K. Extrapolated value to 100% crystalline phase. |
| 7.851 | 300. | Wunderlich, 1962 | amorphous phase; T = 1 to 420 K. Extrapolated value to 100% amorphous phase. |
| 7.574 | 300. | Warfield and Petree, 1961 | T = 10 to 320 K. Interpolated data. |
| 5.83 | 270. | Sochava and Trapeznikova, 1957 | T = 58 to 270 K. Cp value is unsmoothed experimental datum. |
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 |
|---|---|---|---|
| 0.9271 | 415. | Wunderlich, 1962 | |
| 0.9271 | 415. | Wunderlich, 1962 |
Entropy of fusion
| ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 2.23 | 415. | Wunderlich, 1962 | |
| 2.23 | 415. | Wunderlich, 1962 |
IR Spectrum
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Data compiled by: Timothy J. Johnson, Tanya L. Myers, Yin-Fong Su, Russell G. Tonkyn, Molly Rose K. Kelly-Gorham, and Tyler O. Danby
- solid; Bruker Tensor 37 FTIR
0.96438843, 0.96438843, 0.96450084 cm-1 resolution
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.
Steele, 1978
Steele, W.V.,
The standard enthalpies of formation of a series of C7, bridged-ring hydrocarbons: norbornane, norbornene, nortricyclene, norbornadiene, and quadricyclane,
J. Chem. Thermodyn., 1978, 10, 919-927. [all data]
Chang, 1976
Chang, S-S.,
Heat capacities of polyethylene IV. High molecular weight linear polyethylene,
J. Res., 1976, NBS A80, 51-57. [all data]
Chang, Westrum, et al., 1975
Chang, S-S.; Westrum, E.F., Jr.; Carlson, H.G.,
Heat capacities of polyethylene III. One linear and one branched sample from 5 to 350 K,
J. Res., 1975, NBS 79A, 437-441. [all data]
Chang, 1974
Chang, S.S.,
Heat capacities of polyethylene from 2 to 360 K. II. Two high density linear polyethylene samples and thermodynamic properties of crystalline linear polyethylene,
J. Res., 1974, NBS A 78, 387-400. [all data]
Chang and Bestul, 1973
Chang, S.S.; Bestul, A.B.,
Heat capacities of polyethylene from 2 to 360K. I. Standard samples of linear and branched polyethylene whole polymer,
J. Res., 1973, NBS 77A, 395-405. [all data]
Wunderlich, 1965
Wunderlich, B.,
Specific heat of polyethylene single crystals,
J. Phys. Chem., 1965, 69, 2078-2081. [all data]
Passaglia and Kevorkian, 1963
Passaglia, E.; Kevorkian, H.K.,
The heat capacity of linear and branched polyethylene,
J. Appl. Poly. Sci., 1963, 7, 119-132. [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 III. Polyethylene,
Polymer, 1962, 3, 277-285. [all data]
Warfield and Petree, 1962
Warfield, R.W.; Petree, M.C.,
Thermodynamic properties of polyethylene,
Die Makromolekulare Chem., 1962, 51, 113-122. [all data]
Wunderlich, 1962
Wunderlich, B.,
Motion in polyethylene. I. Temperature and crystallinity dependence of the specific heat,
J. Chem. Phys., 1962, 37, 1203-1207. [all data]
Warfield and Petree, 1961
Warfield, R.W.; Petree, M.C.,
Thermodynamic functions of polyethylene,
Chem. Ind. (London), 1961, 1961, 1571-1572. [all data]
Sochava and Trapeznikova, 1957
Sochava, I.V.; Trapeznikova, O.N.,
Heat capacity of chain structures at low temperatures,
Dokl. Akad. Nauk, 1957, SSSR 113, 784-786. [all data]
Notes
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- 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) ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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