Characterization of the regenerated cellulose films in ionic liquids and rheological properties of the solutions

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.

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

Applied Sciences ◽

10.3390/app9091750 ◽

2019 ◽

Vol 9 (9) ◽

pp. 1750 ◽

Cited By ~ 1

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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Fabrication and characterization of regenerated cellulose films obtained from oil palm empty fruit bunch

10.1063/1.5010529 ◽

2017 ◽

Author(s):

A. Nor Amalini ◽

M. Y. Melina Cheah ◽

W. D. Wan Rosli ◽

S. Hayati ◽

M. K. Mohamad Haafiz

Keyword(s):

Oil Palm ◽

Regenerated Cellulose ◽

Empty Fruit Bunch ◽

Cellulose Films ◽

Fabrication And Characterization ◽

Regenerated Cellulose Films

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Structure and properties of novel regenerated cellulose films prepared from cornhusk cellulose in room temperature ionic liquids

Journal of Applied Polymer Science ◽

10.1002/app.31273 ◽

2010 ◽

Vol 116 (1) ◽

pp. 547-554 ◽

Cited By ~ 95

Author(s):

Yan Cao ◽

Huiquan Li ◽

Yi Zhang ◽

Jun Zhang ◽

Jiasong He

Keyword(s):

Ionic Liquids ◽

Room Temperature ◽

Room Temperature Ionic Liquids ◽

Regenerated Cellulose ◽

Structure And Properties ◽

Cellulose Films ◽

Regenerated Cellulose Films

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Fabrication and Characterization of Regenerated Cellulose Films Using Different Ionic Liquids

Journal of Spectroscopy ◽

10.1155/2014/214057 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 24

Author(s):

Jin-Hui Pang ◽

Xin Liu ◽

Miao Wu ◽

Yu-Ying Wu ◽

Xue-Ming Zhang ◽

...

Keyword(s):

Ionic Liquids ◽

Magic Angle Spinning ◽

Regenerated Cellulose ◽

Magic Angle ◽

Force Microscopy ◽

Cellulose Films ◽

Atomic Force ◽

Negative Impacts ◽

Regenerated Cellulose Films ◽

Angle Spinning

The demand for substitution of fossil-based materials by renewable bio-based materials is increasing with the fossil resources reduction and its negative impacts on the environment. In this study, environmentally friendly regenerated cellulose films were successfully prepared using 1-allyl-3-methylimidazolium chloride (AmimCl), 1-butyl-3-methylimidazolium chloride (BmimCl), 1-ethyl-3-methylimidazolium chloride (EmimCl), and 1-ethyl-3-methylimidazolium acetate (EmimAc) as solvents, respectively. The results of morphology from scanning electron microscopy (SEM) and atomic force microscopy (AFM) showed that all the cellulose films possessed smooth, highly uniform, and dense surface. The solid-state cross-polarization/magic angle spinning (CP/MAS)13C NMR spectra and X-ray diffraction (XRD) corroborated that the transition from cellulose I to II had occurred after preparation. Moreover, it was shown that the ionic liquid EmimAc possessed much stronger dissolubility for cellulose as compared with other ionic liquids and the cellulose film regenerated from EmimCl exhibited the most excellent tensile strength (119 Mpa). The notable properties of regenerated cellulose films are promising for applications in transparent biodegradable packaging and agricultural purpose as a substitute for PP and PE.

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