Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Polymerizable surfactants monomer methyl methacrylate

Typical polymeric pseudostationary phases include micelle polymers, polymeric surfactants, water-soluble anionic siloxanes and dendrimers [223-231]. Micelle polymers [e.g. poly(sodium 10-undecylenate), poly (sodium 10-undecenylsulfate), poly(sodium undeconylvalinate), etc.] are synthesized from polymerizable surfactant monomers at a concentration above their critical micelle concentration. These polymers have similar structures to micelles without the dynamic nature of the micelle structure. Polymeric surfactants are polymers with surfactant properties [e.g. acrylate copolymers, such as 2-acrylamide-2-methyl-l-propanesulfonic acid and alkyl methacrylamide, alkyl methacrylate or alkyl acrylate, poly (ally lamine)-supported phases, poly(ethyleneimine), etc]. Water-soluble anionic siloxane polymers are copolymers of alkylmethylsiloxane... [Pg.656]

The products were polymers of methyl methacrylate, butyl acrylate, or their copolymer. The amount of surfactant was about 9% of the monomers and for the cosurfactant the feature was only 1 %. When the same surfactant was used with pentanol as cosurfactant or with no cosurfactant, the particle size distribution was much broader, even bimodal. The latexes were shown to be stable vs. electrolyte (aluminum sulfate), and also for several freeze-thaw cycles. These features were attributed more to the nature of the surfactant than to the use of polymerizable cosurfactant. [Pg.530]

With regard to the behavior of polar polymers in microemulsions, it has been reported that polymerization in methyl methacrylate microemulsions with non-polymerizable surfactants and cosurfactants [28] leads to phase separation of the system in spite of the fact that the poly(methyl methacrylate) is soluble in its monomer. On the other hand, polar polymers such as amphiphilic block copolymers, e.g., poly(2-vinyl p5nidine-fc-ethylene oxide), have been used as cosurfactants to stabilize microemulsions [65, 66] and a specific mechanism has been proposed for polar polymers as stabilizers for emulsions and microemulsions [67]. [Pg.74]

They demonstrated the effectiveness of this method with methyl methacrylate, vinyl acetate, and N,N-dimethylacrylamide instead of styrene as a polymerizable oil to prepare the microemulsions containing IL p)oIar cores, using a long acryloyloxy functionalized imidazolium type-IL (MAUM-Br). Phase diagrams show that all of these [BmimjpFJ/vinyl monomer systems can form transparent and stable microemulsions when MAUM-Br (Figure 5) was used as surfactants. [Pg.596]


See other pages where Polymerizable surfactants monomer methyl methacrylate is mentioned: [Pg.35]    [Pg.221]    [Pg.532]    [Pg.270]   
See also in sourсe #XX -- [ Pg.517 ]




SEARCH



Methacrylate monomers

Methacrylic monomers

Methyl methacrylate

Methyl methacrylate monomers

Methyl monomer

Monomer polymerizability

Polymerizability

Polymerizable

Polymerizable monomer

Surfactant, polymerizable

Surfactants monomers

© 2024 chempedia.info