Mechanochemical induced structural changes in sucrose using the rotational diamond anvil cell

Journal Article · Thu Feb 22 00:00:00 EST 2018 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.5020231· OSTI ID:1422260

Ciezak-Jenkins, Jennifer A. ; Jenkins, Timothy A.

The response of sucrose to high-pressure and shear conditions has been studied in a rotational diamond anvil cell. Previous experiments conducted by Bridgman and Teller showed divergent behavior in regard to the existence of a rheological explosion under mechanochemical stimuli. Raman spectroscopy confirmed the existence of the isostructural Phase I to Phase II transition near 5 GPa. When subjected to high-pressure and shear, Raman spectra of Phase I showed evidence that while the sucrose molecule underwent significant molecular deformation, there was no evidence of a complete chemical reaction. In contrast, Phase II showed a near-total loss of the in-situ Raman signal in response to shear, suggesting the onset of amorphization or decomposition. The divergent behaviors of Phase I and Phase II are examined in light of the differences in the hydrogen bonding and plasticity of the material.

• Sponsoring Organization: USDOE
• Grant/Contract Number: AC02- 98CH10886
• OSTI ID: 1422260
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Vol. 123 Journal Issue: 8; ISSN 0021-8979
• Publisher: American Institute of Physics
• Country of Publication: United States
• Language: English