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. Author manuscript; available in PMC: 2016 May 19.
Published in final edited form as: ACS Appl Mater Interfaces. 2015 May 27;7(22):12099–12108. doi: 10.1021/acsami.5b02308

Figure 9.

Figure 9

Storage (E1′) and loss (E1″) moduli as functions of frequency. Results in control gels indicate decreased overall stiffness at lower frequencies. Additionally, E1″ appears lower than E1′ for all frequency values, and appears decreasing at similar or faster rate than E1′. (A) Comparison of Control (n = 3), Pre48CX (n = 3), and Pre24CX (n = 3) shows decreased stiffness for both E1′ and E1″ at all frequencies. (B) Post24CX (n = 2) shows increased stiffness compared to Control, whereas CCX (n = 4) shows lower transition frequency. Key: ●○, Control E1′ E1″; ■□, Pre48CX E1′ E1″; ◆ ◇, Pre24CX E1′ E1″; ▲△, CCX E1′ E1″; ++, Post24CX E1′ E1″.