TY - JOUR
T1 - A morpholinium ionic liquid for cellulose dissolution
AU - Raut, Dilip G.
AU - Sundman, Ola
AU - Weiqing, Su
AU - Virtanen, Pasi
AU - Sugano, Yasuhito
AU - Kordas, Krisztian
AU - Mikkola, Jyri-Pekka
N1 - tk.
PY - 2015
Y1 - 2015
N2 - A series of substituted morpholinium ionic salts and allyl ammonium acetates were prepared. Amongst those, N-allyl-N-methylmorpholinium acetate ([AMMorp][OAc]) was found to dissolve cellulose readily without any pre-processing of native cellulose. At 120 °C, [AMMorp][OAc] could dissolve 30 wt%, 28 wt% and 25 wt% of cellulose with degree of polymerization (DPn) – 789, 1644 and 2082 respectively, in 20 min. Importantly, SEC analysis indicated that no discernible changes occurred in terms of the degree of polymerization of the different celluloses after regeneration. Furthermore, when comparing the cellulose dissolution capability of these newly synthesized ionic liquids, it is evident that the combination of all three constituents – the morpholinium cation, the existence of an allyl group and choosing the acetate anion are essential for efficient cellulose dissolution. The structure and morphology of the regenerated cellulosic materials were characterized by SEM, XRD, TGA, CP/MAS 13C NMR and FTIR, respectively.
AB - A series of substituted morpholinium ionic salts and allyl ammonium acetates were prepared. Amongst those, N-allyl-N-methylmorpholinium acetate ([AMMorp][OAc]) was found to dissolve cellulose readily without any pre-processing of native cellulose. At 120 °C, [AMMorp][OAc] could dissolve 30 wt%, 28 wt% and 25 wt% of cellulose with degree of polymerization (DPn) – 789, 1644 and 2082 respectively, in 20 min. Importantly, SEC analysis indicated that no discernible changes occurred in terms of the degree of polymerization of the different celluloses after regeneration. Furthermore, when comparing the cellulose dissolution capability of these newly synthesized ionic liquids, it is evident that the combination of all three constituents – the morpholinium cation, the existence of an allyl group and choosing the acetate anion are essential for efficient cellulose dissolution. The structure and morphology of the regenerated cellulosic materials were characterized by SEM, XRD, TGA, CP/MAS 13C NMR and FTIR, respectively.
U2 - 10.1016/j.carbpol.2015.04.032
DO - 10.1016/j.carbpol.2015.04.032
M3 - Artikel
SN - 0144-8617
VL - 130
SP - 18
EP - 25
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
ER -