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Thermal insulation properties of printed cellulose aerogels. a) Infrared images of the 4CNF_10CNC aerogel measured from longitudinal or transverse directions after 30 min on a 100 °C hotplate (emissivity of the background is set to be 1). b) Transverse thermal conductivity of printed cellulose aerogels (25 °C, 50% R.H.) and the thermal conductivities of the reported isotropic cellulose aerogels.
