For each polymer tested, 2.5 mL of a 0.5 mg.mL-1 polymer solution was transferred to three disposable, polycarbonate cuvettes and a UV-visible spectrum recorded. Water or concentrated glutathione solution was added to give final glutathione concentrations of 0, 0.01 and 1 mM. The cuvettes were stirred at ambient conditions and their UV-visible spectra re-recorded after one hour and twenty hrs.
131
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