Abstract:
:Abundant and renewable cellulose is a potential candidate for petroleum-derived synthetic polymers. However, the efficient dissolution of this material is problematic because of the high cost, severe reaction condition (e.g., high temperature) and environmentally unfriendly (e.g., toxic reagents, and solvent recyclability). Herein, to realize the room temperature dissolution of cellulose with an inexpensive and eco-friendly solvent, we design a novel low-cost deep eutectic solvent that is composed of zinc chloride, water and phosphoric acid for the efficient dissolution of cellulose. This solvent is featured as having both the superior hydrogen bonding acidity and the hydrogen bonding basicity, and thus can act as a hydrogen bond molecular scissors to cleave the hydrogen bonds within cellulose. In this process, microcrystalline cellulose can be easily dissolved in the solvent at room temperature with a dissolution ratio up to 15 wt%. The dissolved cellulose can also be recovered without any derivatization. The universality, recyclability and pilot production of dissolving cellulose using this solvent are also demonstrated. This work provides a new strategy for the design of novel deep eutectic solvent capable of disrupting the hydrogen bonds of cellulose under mild conditions.
journal_name
Carbohydr Polymjournal_title
Carbohydrate polymersauthors
Tong Z,Meng J,Liu S,Liu Y,Zeng S,Wang L,Xia Q,Yu Hdoi
10.1016/j.carbpol.2021.118473keywords:
["Aqueous solutions","Biorefining","Cellulose","DFT calculations","Deep eutectic solvents","Solubility","Sustainable chemistry"]subject
Has Abstractpub_date
2021-11-15 00:00:00pages
118473eissn
0144-8617issn
1879-1344pii
S0144-8617(21)00860-2journal_volume
272pub_type
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