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A series of novel triblock copolymers, consisting of a poly(ethylene glycol) center block joined by two blocks of random L‐lactide/glycolide copolymers, are synthesized and their characteristics (spectral, thermal, and mechanical) determined. Polymer compositions and structures are assessed via ¹H‐NMR and ¹³C‐NMR spectroscopies. DSC and stress–strain behavior studies demonstrate that these copolymers are generally more amorphous, more elastic, and tougher than are poly(L‐lactides). © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 2004–2009, 1999