Stability of WCO emulsions Range of WCO Emulsion Proportions without Co-Surfactant WCO (%) Water (%) Surfactant (%) Stability 92 4 4 4 hrs 95 3 2 2 hrs 90 5 5 6 hrs 80 13 7 3 hrs 84 10 6 5 hrs Range of WCO Emulsion with Co-Surfactant (Ethanol) WCO (%) Water (%) Surfactant to Cosurfactant
%) Stability 50 20 15 15 2 days 75 9 8 8 8 days 65 15 10 10 3 days 80 10 5 5 20 days 92 4 2 2 5 days
Alcohols could change the osmotic pressure of the latex particle surface as they work as cosurfactant
Kinetics and effect of surfactant and cosurfactant
on miniemulsion polymerization of acrylate monomers--Hongqiang Li, Xiaokang Ren, Xuejun Lai, and Xingrong Zeng
According to literature [5, 6], wormlike micelles could be obtained from mixed surfactants systems including ionic surfactant with cosurfactant
, mixed nonionic surfactants, mixed cationic-anionic surfactants, and mixed of ionic surfactant with salt.
They are optically isotropic, transparent, and thermodynamically stable homogeneous solutions of oil and water, stabilized by addition of a surfactant and usually a cosurfactant
This suggests that PVAc acts as a cosurfactant
by locating the sulfate group of the end of the chains (co-ordination bonded during initiation stage) facing the aqueous medium.
After the formation of the nanoparticles, surfactant Aerosol-OT, cosurfactant
1-butanol, residual VTES and APTES were removed by dialyzing the solution against DI water in a 12-14 kDa cutoff cellulose membrane for 50 h.
5) was used and formulations with or without cosurfactant
PEG 400 (23%) were [begin strikethrough]also[end strikethrough] prepared.
utilized is phenoxyethanol, a well-known preservative.
LDS 22 provided a model anionic surfactant and CO 897 was used as a nonionic cosurfactant
Abstract The effects of the type and amount of the surfactant and cosurfactant
on the miniemulsion polymerization of acrylate monomers were studied, and the comparison of the kinetics between miniemulsion polymerization and conventional emulsion polymerization was discussed in the presence of reactive surfactant allyloxy nonylphenol propyl polyoxyethylene (10), ether sulfate (DNS-86), and reactive cosurfactant
stearyl methacrylate (SMA).
These excipients play the role of cosurfactant
in microemulsion system [3, 30].