FIG. 2.

Variation of storage (G′, solid) and loss (G″, open) moduli with temperature of PNVCL-L from 10% to 30% w/v (a) and PNVCL-H from 5% to 20% w/v (b). Increase of G′ and G″ with time for PNVCL-L (20% w/v) and PNVCL-H (10% w/v) hydrogels, starting at room temperature and increasing to 37°C, indicated by the temperature profile with time (c). PNVCL-H, PNVCL higher. Color images available online at www.liebertpub.com/tea