Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria
Research Article
Glass and Freezing Transition of Supercooled Water Confined in Mesoporous Materials and Biological Systems
Author(s): Viktor Soprunyuk* and Wilfried Schranz
The behaviour of water confined e.g. in artificial meso-or nanoporous
silica materials are intensively discussed in literature. In this paper, we
present the results of Dynamic Mechanical Analysis measurements of
water confined in biological systems (foods like e.g. bread, apple, turkey
bone, etc.) as a function of temperature and frequency and compare
them with results of water confined in artificial mesopores. Two types of
cooling/heating protocols were used: Slow (2 K/min) cooling/heating runs
and quenching the samples from room temperature to 100 K prior to slow
heating up to room temperature. We found striking similarities between the
behaviour of water confined in mesoporous silica and biological systems,
both, in the vicinity of the glass transition as well as in the freezing/melting
transition region. The obtained results are discussed, using a.. View More»
DOI:
10.35248/2322-3308-12.4.001
