中文名稱：聚乙二醇-b-聚左旋丙交酯(x/y)

英文名稱：mPEG-b-PLLA

由親水性PEG嵌段和疏水性聚（D，L-丙交酯）（PLA）嵌段組成(chéng)的具有生物相容性的兩(liǎng)親性嵌段共聚物。這(zhè)些材料已被(bèi)用于藥物封裝和遞送應用的控制釋放和納米顆粒配方。通過(guò)控制每個聚合物塊的相對(duì)長(cháng)度，可以制備具有不同性質的定義明确的材料。羟基端接允許對(duì)這(zhè)些材料進(jìn)行簡單的進(jìn)一步化學(xué)改性。

Biocompatible, amphiphilic block copolymer composed of a hydrophilic PEG block and a hydrophobic poly(D,L-lactide) (PLA) block. These materials have been used in control release and nanoparticle formulation for drug encapsulation and 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.