Abstract We describe a novel strategy to modify the surface topography as well as the chemical composition of 3D parts fabricated by additive manufacturing. The 3D objects were fabricated by fused deposition modeling (FDM) using styrene filaments. The surface of the objects was then topographically modified providing materials with porous surfaces by means of the Breath Figures approach. By immersion of the object in a chloroform/polystyrene solution during few seconds and evaporation in a controlled humidity chamber, 3D objects decorated with pores over the entire surfaces could be prepared. Moreover, this approach permitted the modification of the pore size as a function of the immersion time as well as the solution concentration. Finally, the porous surface was modified by using a chemical treatment with chlorosulfonic acid. The created chlorosulfonyl groups were used to anchor different chemical compounds to the 3D object with the subsequent change of their surface properties.

中文翻译：

---

制造具有受控表面化学和形貌的 3D 打印物体

摘要 我们描述了一种修改表面形貌以及通过增材制造制造的 3D 零件的化学成分的新策略。3D 物体是使用苯乙烯长丝通过熔融沉积建模 (FDM) 制造的。然后通过呼吸图形方法对物体的表面进行地形修改，提供具有多孔表面的材料。通过在几秒钟内将物体浸入氯仿/聚苯乙烯溶液中并在受控湿度室中蒸发，可以制备在整个表面上装饰有孔的 3D 物体。此外，这种方法允许根据浸泡时间和溶液浓度来修改孔径。最后，通过使用氯磺酸进行化学处理来改性多孔表面。