Influences of ionic environment on self-assembly behaviour of hyperbranched polymers

摘要

Detection of electrical conductivity is carried out to study the characteristics of adsorptive action between several ions such as Ca~(2+), Cl-, Na~+, SO4~(2-) and hyperbranched comb-like polymers. The results show that the strength of their adsorptions is in the descending order as follows: Ca~(2+)>SO4~(2-) ≥Cl~- (Na~+). CaCl2 solution will significantly reduce the electrical conductivity of hyperbranched comb-like polymers, whereas NaCl solution will increase it obviously. Due to association and dispersion of ions in hyperbranched comb-like polymers; all salt ionic solutions can enlarge the critical micelle concentration of hyperbranched comb-like polymers.