Fig. 3: Particle morphologies.
From: Acylation of agricultural protein biomass yields biodegradable superabsorbent plastics
a, b, Dry PPC/25ED particles. c, d, Lyophilised PPC/25ED foam-like particles after 24 h in MQw. The scale bar in the inset of b and d is 2.5 µm. e, f, Images of commercial SAP particles. The arrows in f point at the smooth-surface regions on the surface of the particles.
