Abstract:In this study, novel disulfide cross-linked hydrogels were designed and synthesized. First, ethylenediaminetetraacetic dianhydride reacted with butanediamine and amino-terminated polyethylene glycol via N-acylation reaction to give biocompatible poly(amic acid) (PAA) with pendant carboxyl groups; then, the amino groups of cystamine reacted with carboxyl groups of PAA to generate disulfide cross-linked network polymer (PAA-SS). Fourier transform infrared spectroscopy, 1 H nuclear magnetic resonance imaging, gel… Show more
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