Production of cellulose nanofibrils via an eco-friendly approach

Versatile Mesoporous All-Wood Sponge Enabled by In Situ Fibrillation toward Indoor–Outdoor Energy Management and Conversion

“…Figure 2c,d show the deconvoluted FTIR spectra over the wavenumber range 3000−3700 cm −1 to analyze the hydrogen bond models. 44 In comparison to natural wood, the proportion of intrachain hydrogen bonds and free OH was significantly lower in in situ fibrillated wood, while the proportion of interchain hydrogen bonds was remarkably higher. Reactive DES treatment induced a blue shift of the peaks assigned to hydrogen bonds, presumably due to the carboxylation of wood components.…”

“…It is worth noting that in situ fibrillated wood revealed a significantly higher peak intensity at 3000–3700 cm –1 (−OH stretching vibration) than natural wood, suggesting the improvement in the surface hydroxyl density of wood cell wall, as a consequence of the partial removal of amorphous lignin and hemicelluloses and the introduction of carboxyl groups. Figure c,d show the deconvoluted FTIR spectra over the wavenumber range 3000–3700 cm –1 to analyze the hydrogen bond models . In comparison to natural wood, the proportion of intrachain hydrogen bonds and free OH was significantly lower in in situ fibrillated wood, while the proportion of interchain hydrogen bonds was remarkably higher.…”

Insights into the role of molar ratio and added water in the properties of choline chloride and urea-based eutectic mixtures and their cellulose swelling capacity

“…However, recently notable higher swelling from 29.4 to 44.7 μm was demonstrated for aqueous KOH–urea solution, yet a very long swelling time (24 h) at −10 °C was required. 64…”

“…However, recently notable higher swelling from 29.4 to 44.7 mm was demonstrated for aqueous KOH-urea solution, yet a very long swelling time (24 h) at À10 1C was required. 64 Interestingly, the deep eutectic point composition, that is CCU 12-0 , resulted in the lowest width value of all the samples without the added water, and the width of the treated fibers increased as a function of the amount of choline chloride, with the CCU 21-0 treated sample showing the largest width. This behavior might be attributed to the increased chlorine ion content of the solvent systems.…”