Figure 4.

QENS profiles of S_H−D (Q, ω) at Q = 1.0 Å⁻¹ in the energy range of −500 to 1500 μeV with a resolution of 12 μeV at 238 K (purple), 253 K (blue), 268 K (green), and 283 K (red). S_H−D (Q, ω) is the scattering intensity that represents the water dynamics of the hydrated chitosan, and is obtained by subtracting S_D (Q, ω) from S_H (Q, ω), where S_H (Q, ω) is the scattering intensity of the chitosan hydrated with H₂O and S_D (Q, ω) is that of the chitosan hydrated with D₂O. The black curve represents the resolution profile of vanadium obtained by QENS.