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Dynamic light scattering measurements of PNIPAm a, PNIPAm b and IPN: (a) number distributions versus the hydrodynamic diameter measured at 20 °C; (b) hydrodynamic diameter versus temperature. In the inset in (b), ratio between the diameter at a given pH to the one at pH 5.5 as a function of pH. The concentration of the measured dispersions was 0.01 wt%.
