Preparation of honeycomb structure via unidirectional freezing of polymer solution

我们开发了一种简单的制备多孔聚合物整体的方法，即通过对聚合物溶液进行单向冻结，然后在冷冻干燥过程中对冻结的溶剂进行升华。得到的整体多孔结构具有1~100微米的孔洞，沿冻结方向规则排列。我们展示了我们的方法应用于聚(L-丙交酯)/1，4-二氧六环、聚(L-丙交酯)/水/1，4-二氧六环、聚(L-丙交酯)/聚乙二醇、聚氨酯双丙烯酸酯紫外光固化树脂溶液的潜力。

We developed a facile preparation method of porous polymer monolith by means of unidirectionally freezing of polymer solution and subsequent sublimation of the frozen-solvent in freeze-drying process. The obtained porous structure of the monolith had 1 to 100 micrometer pores aligning along the freezing direction regularly. We demonstrated the potential of our method applying to poly(L-lactide)/1,4-dioxane, poly(L-lactide)/water/1,4-dioxane, poly(L-lactide)/poly(ethylene glycol), polyurethane diacrylate UV curable resin solutions.