Aqueous dispersions of poly(N-isopropylacryiamide) latex are shown to be stable at 25 °C in the presence of simple electrolytes and non-adsorbing polymers; at 40 °C, however, flocculation of the particles takes place as a result of charge screening and depletion forces operative in the system; this process is shown to be reversible, with the particles redispersing on cooling to 25 °C.
M. J. Snowden and B. Vincent, J. Chem. Soc., Chem. Commun., 1992, 1103 DOI: 10.1039/C39920001103
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