本研究将可生物降解高分子聚乳酸与具有亲水性链段的聚乙二醇共聚制得嵌段共聚物,用以改善疏水性材料聚乳酸的亲水性.研究发现通过共聚,显著改善了聚乳酸材料的亲水性,在一定反应条件下,使得材料的接触角由46°降为10～23°.同时还对共聚物的结构性能进行了表征和探讨.
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