摘要
Well-defined amphiphilic triblock copolymers PMAGP-b-PLA-b-PMAGP with varied compositions and molecular weights were obtained via a four-step procedure. The hydrophilicity and water absorption increase with an increase of the PMAGP chain length. The presence of active hydroxyl groups was confirmed by a dyeing procedure.
危险品化学品经营许可证（带存储）