Fig. 5From: Structural changes in lignocellulosic biomass during activation with ionic liquids comprising 3-methylimidazolium cations and carboxylate anionsCellulose crystallinity of IL-activated samples at 3 and 72 h compared to untreated hybrid poplar. X-ray diffraction (XRD) patterns for IL-activated sample at 10 wt% biomass loading are compared to the untreated control. Index of crystallinity for cellulose was calculated using Eq. 1Back to article page