Analysis of grafted poly(N-isopropylacrylamide) and solution polymerized poly(N-isopropylacrylamide) by gel-permeation chromatography. Normalized refractive index responses from the two syntheses are overlaid to show solution (black) and surface-cleaved (grey) polymer retention volumes, and are labeled with the calculated number-average molecular weight (Mn). Samples were derived from the same polymerization reaction containing EMP-bound 1.2 μm Nylon 6,6 membranes, monomer, initiator, and solution EMP.