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. Author manuscript; available in PMC: 2013 Mar 1.
Published in final edited form as: Polym Degrad Stab. 2012 Mar 1;97(3):410–420. doi: 10.1016/j.polymdegradstab.2011.12.001

Table 1.

Summary of the techniques used in this study

Technique Length scale Features related to this study
Confocal Raman Spectroscopy 0.1–0.5 nm Interactions between water and the polymers at the molecular level at 5 μm spatial resolution
Small-angle scattering 5–50 nm Agglomeration of molecules at mesolength scales
Confocal Raman imaging 1 –5 μm Distribution of relative water content near the surface
Scanning electron microscopy 1–100 μm Porous network
Water uptake using 3H-labeled water Bulk Equilibrium water content averaged over the entire sample