CATIONIC POLYELECTROLYTES .12. PEG-PRECURSOR FOR WATER-SOLUBLE CATIONIC POLYMERS WITH TERTIARY N-ATOMS IN THE MAIN-CHAIN

Water-soluble cationic polymers were obtained by polyaddition of poly( ethylene glycol) (PEG) diglycidylethers (M(n)BAR of PEG were 396, 587, 1437 and 3 554, resp.) with asymmetrical diamines such as N,N-dimethy l-1,3-diaminopropane and N,N-diethyl-1,3-diaminopropane. The cationic polymer properties depend on the PEG initial molecular weight and on t he diamine reactivity too. PEG with M(n)BAR = 396 had the best behavio ur in these reactions. The polyelectrolyte feature of cationic polymer s was emphasized both in dilute aqueous solutions and in 2M aqueous Na Cl solutions. The polyelectrolyte behaviour in 2M aqueous NaCl solutio n is determined by the PEG chain presence.