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Synthesis, Characterization and Hydrolytic Degradation of Poly [bis (Methyl Glycolate Diethylamino) Phosphazenes] and Poly [bis (Ethyl Glycolate Diethylamino) Phosphazenes]

Amin AM, Shahzady TG, Shazia K, Adnan A, Rasheed A, Wang Li, Yu Haojie and Shakil MA.

Poly[bis (methyl glycolate diethylamino) phosphazenes] (PMGDEAP) and poly[bis (ethyl glycolate diethylamino) phosphazenes] (PEGDEAP) were stepwise synthesized; the polydichlorophosphazenes (PDCP) was synthesized from hexachlorocyclotriphosphazene (HCCP) by ring opening polymerization (ROP) in the presence of AlCl3 catalyst and in second step chlorine atoms of PDCP were substituted by methyl glycolate, ethyl glycolate and diethylamine as the side groups. Their structures and molecular weights were analyzed by nuclear magnetic resonance (NMR) and gel permeation chromatography (GPC). Moreover, hydrolytic degradation of PMGDEAP and PEGDEAP was investigated in acidic, basic and neutral medium at constant temperature (37°C).