Fig. 6From: Impact of solar radiation on chemical structure and micromechanical properties of cellulose-based humidity-sensing material CottonidElectron paramagnetic resonance (EPR) spectra of industrial Cottonid material (Ernst Krueger) in initial condition and after aging with standardized artificial solar irradiation (CIE solar ID65, irradiance: 2 kW/h) for increasing aging timesBack to article page