Phase behavior of ethylene oxide-dimethylsiloxane PEO-PDMS-PEO triblock copolymers with water

Preparation of functionalized block copolymers based on a polysiloxane backbone by anionic ring‐opening polymerization

“…Another type of polysiloxane‐based surfactant is the amphiphilic block copolymer, in which the hydrophobic block is formed from a poly(dimethylsiloxane) (PDMS) polymer and the hydrophilic block is formed from a hydrophilic organic polymer such as poly(ethylene oxide) (PEO) [Fig. 1(b)] 5, 6…”

Polysiloxane‐Based Block Copolymers as Structure‐Directing Agents in the Synthesis of Hierarchically Organized Silica Monoliths

“…poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) members of the Pluronic TM group, linear amphiphilic siloxane copolymers especially trisiloxane surfactants (Me 3 Si-OSiMe 2 -OSiMe(CH 2 ) x (OCH 2 CH 2 ) y OH) can form lyotropic phases in aqueous solution above their critical micelle concentration (cmc) showing different liquid crystalline (LC) phases depending on concentration, ratio of the chain lengths of hydrophobic to hydrophilic block, solvent, temperature, etc. [12,[16][17][18] Even though there are various publications on the aggregation behaviour of siloxane surfactants in different solvents, they as far as we know are only barely used as templating agents in sol-gel processing. [19] Recently, spherical mesoporous silica have been prepared using a triblock siloxane copolymer surfactant at low concentrations.…”

Interfacial Behavior of Mixed Systems of Glycerylether-Modified Silicone and Polyoxyethylene-Modified Silicone

“…The molecular structures of polyoxyethylene-modified silicones are typically classified into branch type, triblock type, and comb type (1). The phase behavior and the properties of these copolymertype surfactants in aqueous solutions have been studied as functions of temperature and surfactant concentration (12)(13)(14)(15)(16). Ionic (anionic or cationic or zwitterionic) silicone surfactants have also been studied (17)(18)(19)(20)(21).…”