Fig. 13
From: Design and manufacturing of superabsorbent polymers (SAPs) for agriculture in arid areas

SEM images of NaPA and AGMA powders samples with three varying cross-linker content, (wt.) (a) (NaPA-MBA 1.3 mmol), (b) (NaPA-MBA 3.9 mmol), (c) (NaPA-MBA 6.5 mmol), (d) (AGMA-MBA 1.3 mmol), (e) (AGMA-MBA 3.9 mmol), (f) (AGMA-MBA 6.5 mmol), (g, i) AT1 (NaPA-MBA1.3 mmol), and (h, j) AT-2 (AGMA-MBA1.3 mmol) samples.