Fig. 3
From: Development of functional degradable materials by precise crosslinking design of biobased polymers
a Illustrative representation of the preparation process of TS-g-PAAc/PVP blend films. b Dissolution behavior of the TS-g-PAAc/PVP (2:1) blend film in DIW, 3.5% w/v NaCl solution, and seawater. c Seawater-specific dissolution behavior controlled by –COOH deprotonation. d TS-g-PAAc/PVP 2:1 film after 24 h of immersion in different water solutions. Salts: Solutions containing the major salt species in seawater at their typical concentrations. Acid: HCl solution with different concentrations. Base: NaOH solution with different concentrations. Buffers: pH 5 acetate buffer and pH 6, 7, and 7.6 phosphate buffer. Reproduced from [43] with permission from Elsevier
