Deep eutectic solvent pretreatment of cellulose and development of hydrophobic foaming material.
Int J Biol Macromol
; 277(Pt 1): 133879, 2024 Oct.
Article
in En
| MEDLINE
| ID: mdl-39019372
ABSTRACT
This work aims to investigate the effects of deep eutectic solvents (DES) on the chemical and physical structure of cellulose. Choline chloride-oxalic acid and choline chloride-oxalic acid-glycerol were selected as solvents and cotton fibers was sued as raw materials to explore the difference between cotton fibers treated separately with two different DES. According to yield analysis, ternary solvents alleviated the degradation of cellulose when comparing to binary solvents, resulting in over 90 % of cellulose being obtained. Particularly, there is an esterification reaction of cellulose during treatment with the DES system, which also affects the performance of the subsequent products. Through the simple use of mechanical foaming with polyvinyl alcohol and the palm wax impregnation process, foams with a water contact angle greater than 140° and excellent mechanical properties can be obtained. The resultant foam material has 5 % linear elastic area, and prominent compressive strength providing potential use in the packaging industry in the replacement of plastic.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Cellulose
/
Hydrophobic and Hydrophilic Interactions
/
Deep Eutectic Solvents
Language:
En
Journal:
Int J Biol Macromol
Year:
2024
Document type:
Article
Country of publication: