Water Adsorption Properties on Porous Silica Glass Surface Modified by Trimethylsilyl Groups

Structured water in partially dehydrated yeast cells and at partially hydrophobized fumed silica surface

“…Similar modified silicas were described in details elsewhere [35,55,56]. The amounts of grafted TMS groups for chosen series of modified silicas (Table 1, C TMS ) correspond to 30-50% of initial content of surface SiOH groups; i.e., significant amounts of silanols remain.…”

The effect of changes in relative humidity on the hydration rate of Pachuca obsidian

“…The value obtained from our data is, nonetheless, within the range obtained for similar materials. For example, Takei et al [55] obtained a w value near 400 for a porous silica glass from BET measurements at 0°C, which corresponds to an E A -E L value of 13.6 kJ/mol, and Puibasset and Pellenq [56,57] obtained model E A values for Vycor glass that begin at 78 kJ/mole for the initial hydration increments. Several studies of water adsorption on silica gel at temperatures just above room temperature [58][59][60][61] yield E A À E L values from near zero to about 5.5 kJ/mol.…”

Increasing particle size of a synthetic smectite for polymer nanocomposites using a supercritical hydrothermal treatment

“…Their higher surface areas indicate the hydrophilic surface of stevensite, in which the interlayer ions and silanol groups at the edges of the silicate sheets interacted with water molecules. Their S W /S N ratios, estimating the degree of surface hydrophobicity [24], were evaluated in order to investigate the changes in the surface properties before and after the treatment. The S W /S N ratios were calculated as 2.1 and 1.9 for ST and SCF-ST (0.1), respectively.…”