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Updated: Jun 2, 2026

Modulating Shape of Polyester Based Polymersomes using Osmotic Pressure
Published on: April 21, 2021
Pressure-induced polyamorphism in salty water
L E Bove1, S Klotz, J Philippe
1IMPMC, CNRS-UMR 7590, Université P&M Curie, 75252 Paris, France.
Abstract:
We investigated the metastable phase diagram of an ionic salt aqueous solution, LiCl:6D₂O, at high pressure and low temperature by neutron diffraction measurements and computer simulations. We show that the presence of salt triggers a stepwise transformation, under annealing at high pressure, to a new very high-density amorphous form. The transition occurs abruptly at 120 K and 2 GPa, is reversible, and is characterized by a sizeable enthalpy release. Simulations suggest that the polyamorphic transition is linked to a local structural reorganization of water molecules around the Li ions.
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