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. Author manuscript; available in PMC: 2011 May 1.
Published in final edited form as: Biomaterials. 2010 Feb 6;31(13):3736–3743. doi: 10.1016/j.biomaterials.2010.01.058

Figure 2.

Figure 2

GPC analysis of MMP-sensitive PEG-diacrylates plotted against PEG MW standards. Highly degradable (“HD”) peptide reacted with a 2.2 molar excess of PEGDA (uppermost curve) via step-growth polymerization resulted in more than 80% conjugation (sum of Medium and High MWs). Reaction of MMP-sensitive peptides with a 1.6 molar excess of PEGDA (remaining three curves) resulted in more than 90% conjugation, with a majority of the molecular weight species greater than 500 kDa. When subjected to the same reaction stoichiometry, HD, collagen native (“CN”), and least degradable (“LD”) PEG-peptide conjugates show nearly identical polydispersity.