Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-20T01:07:46.436Z Has data issue: false hasContentIssue false
  • English
  • Français

Adjustment of Solid-Solid Phase Transition Temperature of Polyalcohols by the Use of Dopants*

Published online by Cambridge University Press:  06 March 2019

D. Chandra ,
C. S. Barrett  and
D. K. Benson
D. Chandra
Affiliation:
University of Denver, DenverCO 80208
C. S. Barrett
Affiliation:
University of Denver, DenverCO 80208
D. K. Benson
Affiliation:
Solar Energy Research Institute, GoldenCO 80401
Get access

Abstract

The transition temperatures of solid-solid phase changes in selected polyalcohols, “plastic crystals,” can be adjusted by using interstitial and substitutional dopants. An investigation is under way of the structural changes in these during heating and cooling, and of the thermodynamic properties such as the transition, temperatures and enthalpy changes, as a function of the percent of dopant. The purpose of the investigation is to find and evaluate materials having potential value In thermal storage applications. Dopants for pentaerythritol discussed in this report are trimethylolpropane (TMP), ammonia, boron trifluoride, pentaglycerine (PG) and neopentylglycol (NPG).

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 29: Thirty-Fourth Annual Conference on Applications of X-ray Analysis, August 5-9, 1985 , 1985 , pp. 305 - 313
Copyright
Copyright © International Centre for Diffraction Data 1985

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

*

Work supported by contract No. DEWX03-84SF12205 of the Dept, of Energy, San Francisco Operations Office, Oakland, CA.

References

1. Benson, D.K., Webb, J.D., Burrows, R.W., McFadden, J.D., and Christensen, C., SERI Report, Task Nos. 1275.00 and 1464.00 WPA304 (Mar. 1985) (available through NTIS. SERI/TR. 55-1828 Category 62e).Google Scholar
2. Timmermans, J., J. Phys. Chem. Solids 18(1):l–8 (1961).Google Scholar
3. Chandra, D., Fitzpatrick, J.J., and Jorgensen, G., Adv. in X-Ray Anal. 28: 353-360 (1985).Google Scholar
4. Chandra, D. and Barrett, C.S., Effect of Interlayer and Substitutional Dopants on Thermophysical Properties of Solid State Phase-Change Materials, Topical Report to Dept, of Energy, Contract DE-AC03- 84SF12205, Oct. 1, 1984 to Oct. 15, 1985.Google Scholar
5. Doshi, N., Furimn, M. and Rudisaa, R., Acta Cryst, B-29. 143 (1973).Google Scholar
6. Nitta, I. and Watanabe, X., Science Paper I. P. C. R. 34: 1669 (1938).Google Scholar
7. Llewellyn, F.J., Cos, E.G. and Goodwin, T.H., J. Chem. Soc. 1883 (1937).Google Scholar
8. Eilerman, D. and Rudaan, R., Acta Cryst. B35: 2458-2460 (1979).Google Scholar
9. Nitta, I. and Watanabe, I., Bull. Chem. Soc. Japan 13: 28-35 (1938).Google Scholar
10. Smith, G.W., J. Chem. Phys. 50: 3595-3605 (1969).Google Scholar