Dehumidification at high temperature and high humidity by low-temperature regenerative polymers

Abstract

UCST-type poly(N-acryloylglycinamide-co-acrylonitrile), which aggregates at a low temperature in aqueous solutions and dissolves at a high temperature, adsorbed moisture at high temperature (50 °C) and high humidity (p/p₀ = 0.96), and the adsorbent was regenerated at a low temperature (5 °C) even at high humidity (p/p₀ = 0.96). The thermoresponsible behavior was caused by the decrease in the glass transition temperature by the adsorbed water.