plate rheology Gelation times and storage moduli (G'), and tanδ of polymer solutions/gels were determined on a Kinexus Pro parallel plate rheometer (Netzsch, Selb, Bayern, Germany). Measurements were run on a 20 mm plate with a 1 mm gap at 1% strain and 1 -100 rad s -1 frequency sweep. Each frequency sweep lasted approximately 5 minutes, and the entire measurement lasted approximately 15 hours. The gel point was defined using the Winter-Chambon criterion, for which the time of gelation is defined as the point at which tanδ becomes frequency independent at small frequencies . For samples with very high modulus, the elastic modulus was determined using compressive rheology by taking the slope of the stress strain curve of cured gels with a 4 mm diameter. Rheological experiments were analyzed using IRIS Rheo-Hub (IRIS Development, Amherst, MA) .