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Poly(diethylsiloxane)


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

DeltafusH (kcal/mol) Temperature (K) Reference Comment
0.6874295.Kulagina and Lebedev, 1982Degree of crystallinity = 100%.

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
2.33295.Kulagina and Lebedev, 1982Degree

Enthalpy of phase transition

DeltaHtrs (kcal/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.6501206.7crystaline, IIIcrystaline, IIVarma-Nair, Wesson, et al., 1989100% crystallinity/condis crystal.
0.4398282.7crystaline, IIcrystaline, IVarma-Nair, Wesson, et al., 1989Condis crystal/viscous crystal.
0.0552308.5crystaline, IliquidVarma-Nair, Wesson, et al., 1989 
0.6501206.7crystaline, IIIcrystaline, IIVarma-Nair, Wesson, et al., 1989100% crystallinity/condis crystal.
0.4398282.7crystaline, IIcrystaline, IVarma-Nair, Wesson, et al., 1989Condis crystal/viscous crystal.
0.0552308.5crystaline, IliquidVarma-Nair, Wesson, et al., 1989 
0.4947203.crystaline, IIcrystaline, ILebedev, Kulagina, et al., 1984Degree of crystallinity = 72%.
0.6874295.crystaline, IliquidLebedev, Kulagina, et al., 1984Degree of crystallinity = 100%.
0.4947203.crystaline, IIcrystaline, IKulagina and Lebedev, 1982Degree of crystallinity = 72%.

Entropy of phase transition

DeltaStrs (cal/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
2.44203.crystaline, IIcrystaline, ILebedev, Kulagina, et al., 1984Degree
2.33295.crystaline, IliquidLebedev, Kulagina, et al., 1984Degree
2.44203.crystaline, IIcrystaline, IKulagina and Lebedev, 1982Degree

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.

Kulagina and Lebedev, 1982
Kulagina, T.G.; Lebedev, B.V., Thermodynamics of 2,2,4,4,6,6-hexaethylcyclotrisiloxane, its polymerization, and the resulting poly(diethylsiloxane) in the 0-330 K range, 1982, Termodin. [all data]

Varma-Nair, Wesson, et al., 1989
Varma-Nair, M.; Wesson, J.P.; Wunderlich, B., The thermal properties of polysiloxanes poly(dimethyl siloxane) and poly(diethyl siloxane), J. Therm. Anal., 1989, 35(6), 1913-1939. [all data]

Lebedev, Kulagina, et al., 1984
Lebedev, B.V.; Kulagina, T.G.; Svistunov, V.S.; Papkov, V.S.; Zhdanov, A.A., Calorimetric study of 1,1,3,3,5,5-hexaethylcyclotrisiloxane and polydiethysiloxane and the process of polymerization of 1,1,3,3,5,5-hexaethylcyclotrisiloxane in the range 13-330 K, Vysokomol. Soedin., 1984, A26, 2476-2482. [all data]


Notes

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