Combined study of confined water in controlled pore glasses by differential scanning calorimetry and positron annihilation lifetime spectroscopy

Free-Volume Evolution of 1-Propanol Confined in Variously Filled Regular Mesopores of SBA-15 Matrix

“…Therefore, we expect the effect of the attractive interactions between the polar groups of 1-propanol and the SBA-15 matrix, as well as in the free-volume microstructure of the confined 1-propanol. Similar work was done with confined media by the partial filling of pores with water [3,4] or n-hexadecane [5,6] in irregular matrices. However, these substances crystallize in the bulk state, unlike the amorphous 1-PrOH, which is studied in this work.…”

On crystallization of water confined in liposomes and cryoprotective action of DMSO

“…Combination of these experimental techniques has been proven to be suitable for studying the phase behavior of various substances and mixtures. 18,21,22 PALS is an experimental method of nuclear physics using the triplet bound state of positron and electronortho-positronium (o-Ps)as a probe for detecting microstructural changes in the studied materials during variations of external parameters such as temperature, pressure or time. The advantage of the PALS method is high sensitivity of the o-Ps lifetime to changes in microstructure related to phase transitions or other structural rearrangements.…”