(a) The normalized solution viscosity, , as a function of reaction time (0–2400 min) for fragmentation of chitosan solution (1.0% w/v) by 0.5 N HCl. Open circle for experimental point and dotted line for curve fit; (b) the normalized solution viscosity, , as a function of reaction time (0–300 min) for fragmentation of chitosan solution (1.0% w/v) by 0.5 N HCl. Open circle for experimental point and dotted line for curve fit. The reaction was performed at 65°C, and solution viscosity was measured at 25°C.
