Water Solubilization in Nonionic Microemulsions Stabilized by Grafted Siliconic Emulsifiers

Preparation of Amorphous Aluminum Oxide-Hydroxide Nanoparticles in Amphiphilic Silicone-Based Copolymer Microemulsions

“…2) performed previously (30) led to the following conclusions. Silwet amphiphilic molecules, which possess a lipophilic backbone and long-chain hydrophilic headgroups, strongly interact with oil and self-organize in a microstructure in which the water is bound to the hydrophilic headgroups.…”

“…We propose therefore that Al complex organic precursor molecules are solubilized in the outer hydrophobic PDMS blocks of the colloidal aggregate solvated with octanol (30). Hydrolysis of isopropyl and acetylacetonato groups, partial cleavage of some acetylacetonato-aluminum bonds, and condensation would occur at the surfactant aggregate interface.…”

“…2) exhibit a single broad maximum at q = 0 followed by a monotonic decrease of the scattered intensity I (q) at large values of wave vector amplitude q[q = (4π/λ) sin ], where 2 is the scattering angle and λ = 0.154 nm for Cu radiation. The appearance of a peak in the X-ray scattering patterns from these microemulsions has been interpreted in terms of a structural periodicity with characteristic distance d = (2π/q) (30). The SAXS spectra in the copolymer-poor region (line A in Fig.…”

“…In our recent work (30) we showed that Silwet L-7607 can provide a relatively broad isotropic W/O microemulsion region in the presence of medium-chain alcohols (n c ≤ 6), in which up to 38 wt% of water can be solubilized. Silwet L-7607 copolymer possesses good thermal stability and wetting and adhesion properties (31).…”

The effect of structural variation of alcohols on water solubilization in nonionic microemulsions

“…The term solubilization is used (in common with numerous researchers) in the present articles to describe the process of enhancing the solubility of insoluwith one facet of solubilization, the incorporation of water in microemulsions. This is the subject of an ongoing investigation in our group [6][7][8][9][10]. Knowledge of the maximum amount of water that can be solubilized in microemulsions is of fundamental importance for many applications.…”