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. Author manuscript; available in PMC: 2010 Dec 2.
Published in final edited form as: Biomacromolecules. 2009 Nov 9;10(11):3122–3129. doi: 10.1021/bm900789a

Table 1.

Average calculated degree of modification and molecular weights of alginate-PEG-N3 prepared with different amounts of EDC.

Alginate-PEG-N3

EDC, mg 56 116 167
Characterization method 1H NMR FT-IR 1H NMR FT-IR 1H NMR FT-IR
N3/alginate mol ratio 44 64 128 170 172 189
Degree of modification 3 % 5 % 9 % 12 % 12 % 13 %
Mw, g/mol 263,566 269,995 289,747 302,796 303,373 308,755