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. Author manuscript; available in PMC: 2011 Sep 15.
Published in final edited form as: J Biomed Mater Res A. 2010 Sep 15;94(4):1236–1243. doi: 10.1002/jbm.a.32807

Table 2.

Power law coefficients and R2 values for the first degradation phase.

Scaling coefficients R2
APTES α = 23.10 β = 0.5 0.965
PEG 245 α = 23.48 β = 0.5 0.984
PEG 333 α = 11.81 β = 0.7 0.999
PEG 509 α = 7.03 β = 0.9 0.994
PEG 686 α = 2.02 β = 1.3 0.986
PEG 862 α =1.46 β = 1.4 0.986
PEG 1214 α = 0.94 β = 1.5 0.998
PEG 3400 α = 0.0047 β = 3.5 0.999
PEG 5000 α = 0.0020 β = 3.0 0.999