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Temporal stability of LbL-coated PNIPAM-co-MMA NGs in water over different periods of time: (a) NG/PLL; (b) NG/(PLL/PGA); (c) NG/CHIT and (d) NG/(CHIT/DEXS). Closed and empty symbols correspond to heating and cooling cycles, respectively. Gels coated with polysaccharide layers (c and d) are reversibly thermoresponsive; for clarity, only the heating cycles are shown. Reproduced with permission from [8], copyright 2010, Elsevier.
