2.2.2. Embedding Salt into the Printed Framework

The printed framework was kept on a flat surface and sodium chloride crystals were packed into the lumen of the framework. Water was used to wet the packed crystals, partially solubilizing the salt at the crystal boundaries, and fusing the crystals into a single aggregate. After allowing to dry at room temperature on an open bench for 24 h, the salt pellet containing the framework was ready to be used as a collector during electrospinning (Figure 1b).
