A deuterium nuclear magnetic resonance study of chain disorder in lamellar potassium palmitate: The effect of long and short chain guests

Authors

Peter A. Beckmann, Bryn Mawr CollegeFollow
E. E. Burnell
M. A. Heldman
K. R. Northey
T. P. Higgs

Document Type

Article

Version

Author's Final Manuscript

Publication Title

Canadian Journal of Physics

Volume

58

Publication Date

1980

Abstract

The deuterium magnetic resonance spectra of lamellar phases of host perdeuterated potassium palmitate mixed with varying amounts of guest protiated potassium octanoate and behenate and 86.3 mol% D₂O are reported. At higher temperatures, the short chain guests give rise to more fluidity and the long chain guests give rise to less fluidity towards the end of the host chain. At low temperatures there are changes in the interaction between the polar head group and the water which depend on sample composition. The transition from the lamellar phase to the low temperature gel phase is investigated and in some cases the gel phase is found to be a complicated many-phase region, at least for the water. The spectral results are presented in detail but compact and empirical methods of analysis are also investigated.

Citation

Beckmann, Peter A., E. E. Burnell, M. A. Heldman, K. R. Northey, and T. P. Higgs. 1980. "A deuterium nuclear magnetic resonance study of chain disorder in lamellar potassium palmitate: The effect of long and short chain guests." Canadian Journal of Physics 58.11: 1544-1554.

DOI

https://doi.org/10.1139/p80-203