Surfactant-induced mesomorphic structures in flexible polymers

taotao477

During the last two years, mesomorphic structures for polyelectrolytes with ionically
bound surfactants have been reported. This has now been extended to the case of
hydrogen bonding. For poly (4-vinyl pyridine)-pentadecyl phenol (P4VP-(PDP)x), the long
period Lp of the lamellar structure is found to decrease as a function of x, in complete contrast
to polyelectrolyte systems. Scaling arguments predict that the x-dependence of the long period
is entirely due to the reduction in the thickness of the polymer layer and satis¯es Lp / x
¡1, as observed experimentally. Polyelectrolyte-surfactant complexes, on the other hand, are always
locally fully complexed due to cooperative complexation with a corresponding x-independent
long period.

chutianshu

学习一下