Fabrication and comparative evaluation of regenerated cellulose films using pulp fines and pith from corn stalk in DMAc/LiCl solvent system

BioResources ◽  
2019 ◽  
Vol 14 (3) ◽  
pp. 6421-6432
Author(s):  
Heng Zhang ◽  
Xiaoning Tang ◽  
Xin Gao ◽  
Keli Chen
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquid ◽  
Comparative Evaluation ◽  
Solvent System ◽  
Regenerated Cellulose ◽  
Corn Stalk ◽  
Small Particles ◽  
Cellulosic Materials ◽  
Cellulose Films ◽  
Regenerated Cellulose Films

Cellulose of corn stalk pulp fines and stalk pith were dissolved in an ionic liquid solvent system (DMAc/LiCl) and then regenerated to form films. The mechanical properties and Tmax of pulp fines/regenerated cellulose (RC) films were higher than that of the corresponding films from stalk pith. As the ratio of small particles was high in the pulp fines, the elongation at breakage of their RC films also increased to 12.9%. Thus, pulp fines were suitable for prepared regenerated cellulosic materials.

Dissolution of Absorbent Cotton in Ionic Liquid and Characterization of the Regenerated Cellulose

2013 ◽  
Vol 830 ◽  
pp. 163-166 ◽  
Author(s):  
Ri Na Wu ◽  
Hu Zhu ◽  
Bei Hai He
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Chemical Properties ◽  
Regenerated Cellulose ◽  
Absorbent Cotton ◽  
Cellulose Films ◽  
Cotton Linters ◽  
Regenerated Cellulose Films ◽  
Tga Analysis

Dissolution of absorbent cotton (DP above 4000) using ionic liquids as solvent and regeneration was investigated. The results show that 1-ally-3-methylimidazolium chloride (AMIMCl) was a good solvent to dissolve absorbent cotton and a solution of 3 wt% can be reached in 18 min at 120°C. Besides, as the dissolving temperature increased the time needed for the cotton linters to dissolve decreased. The physic-chemical properties of the regenerated cellulose films were also characterized by XRD, FTIR and TGA analysis.

scholarly journals Secondary chain motion and mechanical properties of γ-irradiated-regenerated cellulose films

2016 ◽  
Vol 69 (1-2) ◽  
pp. 1500329 ◽  
Author(s):  
Aisha Tanvir ◽  
Mariam A. Al-Maadeed ◽  
Mohammad K. Hassan
Keyword(s):  
Mechanical Properties ◽  
Regenerated Cellulose ◽  
Cellulose Films ◽  
Regenerated Cellulose Films

Preparation and characterization of regenerated cellulose films using borassus fruit fibers and an ionic liquid

2017 ◽  
Vol 160 ◽  
pp. 203-211 ◽  
Author(s):  
K. Obi Reddy ◽  
C. Uma Maheswari ◽  
M.S. Dhlamini ◽  
B.M. Mothudi ◽  
Jinming Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Regenerated Cellulose ◽  
Cellulose Films ◽  
Regenerated Cellulose Films

scholarly journals Synthesis of Quaternary Ammonium Room-Temperature Ionic Liquids and their Application in the Dissolution of Cellulose

2019 ◽  
Vol 9 (9) ◽  
pp. 1750 ◽  
Author(s):  
Yao-Hsuan Tseng ◽  
Yu-Yin Lee ◽  
Shih-Hsun Chen
Keyword(s):  
Ionic Liquids ◽  
Quaternary Ammonium ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids ◽  
Regenerated Cellulose ◽  
Exchange Reactions ◽  
Cellulose Films ◽  
Structural Regularity ◽  
Rapid Dissolution ◽  
Regenerated Cellulose Films

In this work, several kinds of quaternary ammonium-based room-temperature ionic liquids (QA RTILs) are synthesized by alkylation and ion-exchange reactions for the rapid dissolution of cellulose. The applications of cellulose materials have been limited due to their poor solubility in conventional organic solvents, because of a high degree of structural regularity and a large number of hydrogen bonds. The prepared ionic liquids were identified by nuclear magnetic resonance, elemental analysis, and liquid chromatography-mass spectrometry. The results indicated that N,N,N-triethylhexan-1-aminium acetate (N6222OAc), tetrahexylammonium acetate (N6666OAc), and N,N,N,N′,N′,N′-hexaethyldecane-1,10-diaminium acetate (C10(N222OAc)2) exhibited good cellulose-dissolution without any pretreatment. The regenerated cellulose films with a low degree of crystallization of the cellulose II phase were also prepared easily in this process using N6222OAc due to its polar and small cation. These QA RTILs can be used as non-derivatizing solvents for cellulose and can also be easily recycled because of their thermostable and nonvolatile properties.

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