Fig. 7. Representative TEM images recorded for: (a) PGMA62-PHPMA140 worms (control); (b) P(GMA65-stat-GlyMA1.7)-PHPMA140 worms prior to cystamine derivatization; (c) P(GMA65-GlyMA1.7)-PHPMA140 worms dried from acidic aqueous solution (pH 2) after derivatization using a diamine/epoxy molar ratio of 0.05; (d) mixture of P(GMA65-stat-GlyMA1.7)-PHPMA140 spheres and short worms obtained under the same conditions after derivatization using a diamine/epoxy molar ratio of 15.
