Synthesis and solution properties of a new pH-responsive polymer containing amino acid residues

HA Al-Muallem, MIM Wazeer, SA Ali - Polymer, 2002 - Elsevier
The amine salt, N, N-diallyl-N-carboethoxymethylammonium chloride was cyclopolymerized
in water using ammonium persulfate as an initiator to afford a cationic polyelectrolyte which
on acidic hydrolysis of the pendant ester groups gave the corresponding cationic acid salt
(CAS). The CAS was converted into an anionic polyelectrolyte (APE) and polybetaine (PB).
The solution properties of the APE having two basic functionalities were investigated in
detail by potentiometric and viscometric techniques. Basicity constants of the amine as well …

Synthesis and solution properties of a new pH‐responsive polymer containing amino propanesulfonic acid residues

SA Ali, MAJ Mazumder… - Journal of Polymer …, 2003 - Wiley Online Library
The reaction of diallyl amine with 1, 3‐propane sultone led to the synthesis of the zwitterionic
monomer 3‐(N, N‐diallylammonio) propanesulfonate. The sulfobetaine was
cyclopolymerized in water in the presence of sodium chloride with t‐butylhydroperoxide as
an initiator to afford a polysulfobetaine (PSB) in very good yield. PSB, upon treatment with
sodium hydroxide, was converted into an anionic polyelectrolyte (APE). Although APE was
readily soluble in salt‐free water, PSB needed the presence of low‐molecular‐weight salts …
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