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Novel triblock copolymers of poly(L-lactide)-poly(ethylene glycol)-sebacate-poly(ethylene glycol)-poly(L-lactide) were synthesized by Ring-Opening Polymerization (ROP). Two groups of eighteen polymer networks were also prepared; the first nine network groups were prepared from triblock copolymers with crosslinked sodium alginate, S1-S9. Pluronic F-127 was added to the previous compositions to prepare the second nine-network group, SP1-SP9. All those polymer networks were loaded with 50 IU of insulin. Insulin release study at pH 1.2 and 8.4 for 24 hours was carried out, and it revealed that it...