Otrzymywanie i modyfikacja biodegradowalnych poliestrów multifunkcjonalnych

Multifunctional polyesters containing allyl groups in side chains were synthesized by catalyzed polyaddition of succinic anhydride (SA) with allyl glycidyl ether (AGE) and butyl glycidyl ether (BGE) (Table 1). The allyl groups in side chains were oxidized to hydroxyls (syntheses of diols, Table 3) or to carboxyl groups (Table 4). Use of either KMnO₄ in the presence of NaHCO₃ (1) or N-methylmorpholine oxide (NMO) and OsO₄ as a catalyst (2) carried out the oxidation reactions to diols. The oxidation reactions to carboxyl groups were carried out in diphase system in the presence of crown ether. KMnO₄ in acetic acid was used as an oxidant. The structures of the products have been confirmed by ¹H NMR method (Fig. 1). Oxidized polyesters were more hydrophilic than their non-oxidized precursors (Table 2). The polyesters containing more than 60 % of mers with -OH groups or 80 % of mers with -COOH groups were completely soluble in water.