Polyelectrolyte complex formed from diazoresin(DR) as cationic polyelectrolyte and alkaline hydrolysate of styrenemaleic anhydride copolymer(PSMNa) as anionic polyelectrolyte does not dissolve in water or organic solv...Polyelectrolyte complex formed from diazoresin(DR) as cationic polyelectrolyte and alkaline hydrolysate of styrenemaleic anhydride copolymer(PSMNa) as anionic polyelectrolyte does not dissolve in water or organic solvents due to its ionic crosslinking structure. It was found that the solubility of this complex was greatly enhanced in aqueous solution of sodium dodecyl sulfate(SDS). The solubility of DRPSMNa complex in 0.1 mol/L and 0.15 mol/L SDS aqueous solution was determined to be 0.024 g/mL and 0.033 g/mL respectively. It was also confirmed that the complex from DR and SDS, which does not dissolve in water, can also dissolve in SDS aqueous solution. The decomposition temperature(T d ) of diazonium groups for different complexes was determined by DSC and shows that the T d of DRPSMNa after dissolution in SDS aqueous solution changes to 146 ℃ from the original value of 133 ℃. It was proposed that during the dissolution of PEC in surfactant aqueous solution, the complex is separated to its two components via the interaction between PEC and surfactant molecules at first, then the components dissolve in water.展开更多
文摘Polyelectrolyte complex formed from diazoresin(DR) as cationic polyelectrolyte and alkaline hydrolysate of styrenemaleic anhydride copolymer(PSMNa) as anionic polyelectrolyte does not dissolve in water or organic solvents due to its ionic crosslinking structure. It was found that the solubility of this complex was greatly enhanced in aqueous solution of sodium dodecyl sulfate(SDS). The solubility of DRPSMNa complex in 0.1 mol/L and 0.15 mol/L SDS aqueous solution was determined to be 0.024 g/mL and 0.033 g/mL respectively. It was also confirmed that the complex from DR and SDS, which does not dissolve in water, can also dissolve in SDS aqueous solution. The decomposition temperature(T d ) of diazonium groups for different complexes was determined by DSC and shows that the T d of DRPSMNa after dissolution in SDS aqueous solution changes to 146 ℃ from the original value of 133 ℃. It was proposed that during the dissolution of PEC in surfactant aqueous solution, the complex is separated to its two components via the interaction between PEC and surfactant molecules at first, then the components dissolve in water.
