Preparation and Characterization of a Novel Hybrid Hydrogel Composed of Bombyx mori Fibroin and Poly(N-isopropylacrylamide)

Figure 2

SEM images for the freeze-dried 5.0 wt% silk fibroin solution ((a)-(b)) and SF/PNIPAAm composite gel prepared with various concentration of each polymer. ((c)-(d)) 5.0 wt% SF and 3.0 wt% PNIPAAm; (e)-(f) 5.0 wt% SF and 2.0 wt% PNIPAAm; (g)-(h) 5.0 wt% SF and 1.0 wt% PNIPAAm; (i)-(j) 3.0 wt% SF and 3.0 wt% PNIPAAm; (k)-(l) 1.0 wt% SF and 3.0 wt% PNIPAAm.

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