中文名称：聚丙交酯-b-聚乙二醇-b-聚丙交酯(x/y/x)

英文名称：PLA-b-PEG-b-PLA

由亲水性中央PEG嵌段和两个末端疏水性聚（D, L-丙交酯）（PLlA）嵌段组成的生物相容性两亲三嵌段聚合物。这些材料已被用于药物递送应用的控释制剂和纳米颗粒形成中。可通过控制每个聚合物嵌段的相对长度来制备具有各种属性的定义明确材料。羟基封端可实现对这些材料进行进一步的化学修饰。

A biocompatible amphiphilic triblock polymer consisting of a hydrophilic central peg block and two terminal hydrophobic poly (D, L-lactide) (PLLA) blocks. These materials have been used in controlled release preparations and nanoparticle formation for drug delivery applications. Well defined materials with various properties can be prepared by controlling the relative length of each polymer block. Hydroxyl end capping can realize further chemical modification of these materials.