Natural Polymer Hydrogels Emerge as Sustainable Solution for Medicine and Environmental Remediation
A recent scientific review published in Discover Polymers highlights the growing importance of hydrogels synthesized from natural polymers as sustainable alternatives to petroleum-derived polymer networks. These natural hydrogels, characterized by a two-phase architecture of a solid crosslinked matrix interspersed with liquid, primarily water, offer high elasticity, tunable viscosity, and responsiveness to environmental cues. Unlike synthetic polymers, which contribute to plastic pollution due to their lack of biodegradability, biopolymers sourced from renewable resources are biocompatible, non-toxic, and undergo benign enzymatic biodegradation. The review details the structural foundations of these sustainable matrices, which are derived from terrestrial plants, marine organisms, and agricultural residues like corncobs, bagasse, bamboo, cotton, and cereal straw. Key biopolymers include lignin, starch, carrageenans, and chitosan, each offering unique properties for hydrogel formation. Material scientists c...