Di-shun Zhao, Lin-lin Fu, Juan Zhang, He Li, Meng-shuai Liu, Jiang-tao Fu, Wei Wang. STUDY ON THE DISSOLUTION OF CELLULOSE IN N-ALLYLPYRIDINIUM CHLORIDE IONIC LIQUID AND CO-SOLVENT COMPOSITES. [J]. Acta Polymerica Sinica (9):937-942(2012)
DOI:
Di-shun Zhao, Lin-lin Fu, Juan Zhang, He Li, Meng-shuai Liu, Jiang-tao Fu, Wei Wang. STUDY ON THE DISSOLUTION OF CELLULOSE IN N-ALLYLPYRIDINIUM CHLORIDE IONIC LIQUID AND CO-SOLVENT COMPOSITES. [J]. Acta Polymerica Sinica (9):937-942(2012) DOI: 10.3724/SP.J.1105.2012.11407.
STUDY ON THE DISSOLUTION OF CELLULOSE IN N-ALLYLPYRIDINIUM CHLORIDE IONIC LIQUID AND CO-SOLVENT COMPOSITES
N-allylpyridinium chloride ionic liquid ([APy]Cl) was synthesized by one-step process and its property of dissolving cellulose was investigated.The results showed that the solubility of cotton linter pulp cellulose (degree of polymerization (DP)=556) was 19.71% at 120℃
and the thermostability of regenerated cellulose (DP=223) seriously decreased.The performance of regenerated cellulose could be enhanced by adding cosolvents into [APy]Cl.Compared with other cosolvent (DMSO
DMF or pyridine)
the [APy]Cl/DMAc composite solvent exhibited a better dissolution to cotton linter pulp cellulose.The solubility was 15.03% and the DP of regenerated cellulose was 403 at 100℃ with lower cost.But the solubility of [APy]Cl/DMAc was only 1.36% at 70℃.So
the [APy]Cl/1-N-ally1-3-methylimidazolium chloride ionic liquid ([AMIM]Cl) solvent was discussed afterwards.The results showed that the solubility of cotton linter pulp was 8.78% and the DP of regenerated cellulose was 516 in [APy]Cl/[AMIM]Cl composite solvent at 70℃.Besides
[APy]Cl/DMAc and [APy]Cl/[AMIM]Cl were liquid respectively below the melting point of [APy]Cl and they were the potential cellulose solvent.The FTIR
XRD and TGA spectrograms showed that these solvents were non-derivatizing solvents for cellulose
the cellulose was changed from cellulose Ⅰ to cellulose Ⅱ during dissolution and regeneration and the thermal stability of the regenerated cellulose slightly decreased.The photographs and SEM image indicated that the regenerated cellulose membrane was homogeneous and dense.
Processing and Functionalization of Cellulose with Ionic Liquids
HOMOGENEOUS SYNTHESIS OF CELLULOSE NAPHTHOATE IN AN IONIC LIQUID
Preparation and Phase Behavior of Doubly Thermo-responsive Ionogels
Effect of Coagulation Bath Temperature on the Structure and Properties of Regenerated Cellulose Materials
Research Progress on Thermoplastic Cellulose Materials
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CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences
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