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With the monomer weight ratio, the dose of the surfmer was gradually increased to the number of micelle aggregates before copolymerization, and the length of hydrophobic micro blocks of the corresponding copolymer was prolonged after copolymerization [29].
The apparent viscosity of polymers was first enhanced and then reduced by the increasing surfmer dose (Figure 5).
Effect of Surfmer Concentration on Surface Tension.
It was indicated appropriate dose of surfmer contributed to increasing the length and ratio of hydrophobic blocks and the hydrophobic association ability, tightening the water surface arrangement of polymer molecules and reducing surface tension.
The surfmer DPA, through intermolecular association, increased the molecular weights of the polymers and the viscosity and surface activity of polymer solutions.
Tieke, "Copolymerization of a cationic surfmer with HEMA in three-component lyotropic mesophase: a route to nanostructured polymer gels," in Mesophases, Polymers, and Particles, vol.
Meng, "Synthesis, characterization and aqueous properties of a new hybrid fluorocarbon cationic surfmer," Journal of Surfactants and Detergents, vol.
In the DMDCC/SDS mixed system, [CMC.sub.H] is the CMC of surfmer and CMCH+S is the critical micelle concentration of DMDCC-SDS binary mixed micelles and [N.sup.m.sub.agg] which is determined by steady-state fluorescence quenching technique.
A novel cationic surfmer, methacryloxyethyl-dimethyl cetyl ammonium chloride (DMDCC), was synthesized in the experiment.
To overcome these drawbacks, the conventional micellar copolymerization method is modified by using polymerizable surfactants, that is, surfmers, to substitute the traditional ones.