posted on 2023-07-18, 12:09authored byLuyao Zhang, Haitao Yu, Shuo Liu, Yang Wang, Tiancheng Mu, Zhimin Xue
Deep eutectic solvents (DESs) have attracted significant
interest
in dissolving lignocellulosic components. However, revealing the relationship
between the solvation properties of DESs and their ability to dissolve
lignocellulosic components remains a significant challenge. Herein,
56 DESs were prepared and applied to dissolve lignocellulosic components.
This revealed that the Kamlet–Taft parameters (i.e., α,
β, and π*) were significantly affected by the structures
of DESs. More notably, the correlation between Kamlet–Taft
parameters and solubility varied with DESs and lignocellulosic components.
Concretely, DESs have greater values of β and β–α
(net basicity), are expected to dissolve cellulose efficiently, have
greater net basicity, and are favorable to dissolve lignin, and the
solubility of xylan was linearly correlated with the β value.
These findings provided valuable information and necessary theoretical
guidance on designing robust DESs to dissolve lignocellulosic components
based on Kamlet–Taft solvatochromic parameters.