PHASE TRANSFORMATIONS IN REGENERATED MICROCRYSTALLINE CELLULOSE FOLLOWING DISSOLUTION BY AN IONIC LIQUID
Phase transformations in microcrystalline cellulose (MCC) were studied following dissolution of 5, 10, and 20 wt. % MCC in the ionic liquid 1-butyl-3-methylimidazolium formate (BMIMFmO) and regeneration via water. BMIMFmO was found to be useful as a non-derivatizing solvent for cellulose without the...
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North Carolina State University
2010-04-01
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Online Access: | http://Microcrystalline cellulose; Dissolution; Regenerated cellulose; Ionic liquid |
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doaj-ab9ee1732882410b8b206ad66b7017a72020-11-24T23:58:44ZengNorth Carolina State UniversityBioResources1930-21262010-04-0152979989PHASE TRANSFORMATIONS IN REGENERATED MICROCRYSTALLINE CELLULOSE FOLLOWING DISSOLUTION BY AN IONIC LIQUIDAlireza ShakeriMark StaigerPhase transformations in microcrystalline cellulose (MCC) were studied following dissolution of 5, 10, and 20 wt. % MCC in the ionic liquid 1-butyl-3-methylimidazolium formate (BMIMFmO) and regeneration via water. BMIMFmO was found to be useful as a non-derivatizing solvent for cellulose without the need for any pre-treatment. Wide angle X-ray scattering indicated that a phase transformation from cellulose I to either a poorly crystalline form of cellulose I and/or cellulose II occurs during regeneration after dissolution in BMIMFmO. The dissolution time affected the resulting microstructure of the regenerated cellulose. Thermogravi-metric analysis showed that regeneration from the ionic liquid lowers the decomposition onset temperature and increases the char yield when compared with the as-received MCC.Microcrystalline cellulose; Dissolution; Regenerated cellulose; Ionic liquidhttp://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_05_2_0979_Shakeri_Staiger_Phase_Trans_MCC_Ionic_Liq/591 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Alireza Shakeri Mark Staiger |
spellingShingle |
Alireza Shakeri Mark Staiger PHASE TRANSFORMATIONS IN REGENERATED MICROCRYSTALLINE CELLULOSE FOLLOWING DISSOLUTION BY AN IONIC LIQUID BioResources http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_05_2_0979_Shakeri_Staiger_Phase_Trans_MCC_Ionic_Liq/591 |
author_facet |
Alireza Shakeri Mark Staiger |
author_sort |
Alireza Shakeri |
title |
PHASE TRANSFORMATIONS IN REGENERATED MICROCRYSTALLINE CELLULOSE FOLLOWING DISSOLUTION BY AN IONIC LIQUID |
title_short |
PHASE TRANSFORMATIONS IN REGENERATED MICROCRYSTALLINE CELLULOSE FOLLOWING DISSOLUTION BY AN IONIC LIQUID |
title_full |
PHASE TRANSFORMATIONS IN REGENERATED MICROCRYSTALLINE CELLULOSE FOLLOWING DISSOLUTION BY AN IONIC LIQUID |
title_fullStr |
PHASE TRANSFORMATIONS IN REGENERATED MICROCRYSTALLINE CELLULOSE FOLLOWING DISSOLUTION BY AN IONIC LIQUID |
title_full_unstemmed |
PHASE TRANSFORMATIONS IN REGENERATED MICROCRYSTALLINE CELLULOSE FOLLOWING DISSOLUTION BY AN IONIC LIQUID |
title_sort |
phase transformations in regenerated microcrystalline cellulose following dissolution by an ionic liquid |
publisher |
North Carolina State University |
series |
BioResources |
issn |
1930-2126 |
publishDate |
2010-04-01 |
description |
Phase transformations in microcrystalline cellulose (MCC) were studied following dissolution of 5, 10, and 20 wt. % MCC in the ionic liquid 1-butyl-3-methylimidazolium formate (BMIMFmO) and regeneration via water. BMIMFmO was found to be useful as a non-derivatizing solvent for cellulose without the need for any pre-treatment. Wide angle X-ray scattering indicated that a phase transformation from cellulose I to either a poorly crystalline form of cellulose I and/or cellulose II occurs during regeneration after dissolution in BMIMFmO. The dissolution time affected the resulting microstructure of the regenerated cellulose. Thermogravi-metric analysis showed that regeneration from the ionic liquid lowers the decomposition onset temperature and increases the char yield when compared with the as-received MCC. |
topic |
http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_05_2_0979_Shakeri_Staiger_Phase_Trans_MCC_Ionic_Liq/591 |
url |
http://Microcrystalline cellulose; Dissolution; Regenerated cellulose; Ionic liquid |
work_keys_str_mv |
AT alirezashakeri phasetransformationsinregeneratedmicrocrystallinecellulosefollowingdissolutionbyanionicliquid AT markstaiger phasetransformationsinregeneratedmicrocrystallinecellulosefollowingdissolutionbyanionicliquid |
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1725449981410672640 |