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. Author manuscript; available in PMC: 2012 Aug 18.
Published in final edited form as: Polymer (Guildf). 2011 Aug 18;52(18):3887–3896. doi: 10.1016/j.polymer.2011.07.007

Figure 8.

Figure 8

Schematic diagram to illustrate the cross-propagation reaction of the polymer chains in the sol with network-bound SPELGA acrylates to facilitate crosslinking: scheme a) SPELGA macromonomer with PEG (blue), LA/GL (green), and acrylate (red) groups; the growing polymer chain is shown with a purple dot at the chain end; scheme b) a growing chain in the sol (~X*) cross-propagates by reaction with a network-bound SPELGA acrylate (>AC; reaction 9) followed by propagation with SPELGA and NVP monomers (reactions 6 and 7) to form a propagating chain bound to the gel; scheme c) the growing chain in the gel cross-propagates with a network-bound SPELGA acrylate to form a load-bearing network chain (reaction 11). Some SPELGA macromonomers (4-arm blue stars) are shown with a smaller size for clarity.