Non-covalent crosslinkers for electrospun chitosan fibers

► GP, TA and TPP were used to non-covalently crosslink electrospun chitosan. ► OS and activated OS crosslinking produces unbranched fibers. ► TS and activated TS crosslinking yield branched/web electrospun chitosan fibers. ► Activation of TS chitosan-TPP and TS chitosan-TA mats are insoluble in water for 72 h. ► TS chitosan-TA electrospun mats are insoluble in 1 M AA for 72 h.