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中文名稱：聚乙二醇-b-聚己內酯(x/y)

英文名稱：mPEG-b-PCL

由親水性PEG嵌段和疏水性PCL嵌段組成的具有生物相容性的兩親性嵌段共聚物。這些材料已被用作嵌段共聚物表面活性劑，以及用于藥物遞送應用的控釋和納米顆粒制劑。通過控制每個聚合物塊的相對長度，可以制備具有不同性質的定義明確的材料。羥基端接允許對這些材料進行簡單的進一步化學改性。

Biocompatible, amphiphilic block copolymer composed of a hydrophilic PEG block and a hydrophobic PCL block. These materials have been used as a block copolymer surfactant as well as in control release and nanoparticle formulation for drug delivery applications. Well-defined materials with varying properties can be prepared by controlling the relative length of each polymer block. Hydroxyl termination allows for facile further chemical modification of these materials.