Feixue Lu

A cellulose-based flexible double-cross-linked hydrogel with hierarchical porosity of max.80% was obtained by a facile solution-phase method of using polydopamine (PDA) as crosslinker between cellulose and polyacrylamide (PAM). The investigation on the ratio of the dopamine/acrylamide (DA/AM) reveals that the π-π stacking of the catechol groups in PDA and the abundant hydrogen bonds distributed in the gel network exert key effects on the hydrogels’ mechanical.