Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly

In the present research, 1,3-dimethyl-imidazolium dimethyl phosphate ([Mmim][DMP]) ionic liquid was applied to dissolve alkali lignin from wheat grass to prepare for lignin micro/nano-particles. The alkali lignin can be dissolved completely at 80 °C in 30 min under microwave condition with [Mmim][DM...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	C. Liu [verfasserIn] Y. M. Li [verfasserIn] Y. Hou [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2018

Schlagwörter:	Nanomaterials ionic liquid alkali lignin dissolution micro/nano-particles

Übergeordnetes Werk:	In: eXPRESS Polymer Letters - Budapest University of Technology, 2010, 12(2018), 10, Seite 946-956
Übergeordnetes Werk:	volume:12 ; year:2018 ; number:10 ; pages:946-956

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3144/expresspolymlett.2018.80

Katalog-ID:	DOAJ008064741

Internformat


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520			\|a In the present research, 1,3-dimethyl-imidazolium dimethyl phosphate ([Mmim][DMP]) ionic liquid was applied to dissolve alkali lignin from wheat grass to prepare for lignin micro/nano-particles. The alkali lignin can be dissolved completely at 80 °C in 30 min under microwave condition with [Mmim][DMP] (solid-liquid ratio of 1:10) which is easy to be recycled. The dissolved lignin can be precipitated by diluting the ionic liquid-lignin solution with water to get lignin micro/nano-particles with diameter ranged from 200 nm to 1.5 µm. Structural analyses with Gel permeation chromatography (GPC), 2D heteronuclear single quantum coherence nuclear magnetic resonance (2D-NMR), Thermogravimetric Analysis (TGA), etc., indicate that a large number of dehydration reactions occurred during dissolution process to result in the generation of unsaturated bonds with higher degree of unsaturation (ω) (from 197–334), lower polydispersity (from 1.49 to 1.12) and lower average molecular weight (from 8634 to 5406 Da). Compared with original alkali lignin, the regenerated alkali lignin as micro/nano-particles showed higher thermal stability. It was also found from the 2D NMR spectra that the cleavages of aryl-ether bonds dramatically happened during the dissolution process, [Mmim][DMP] ionic liquid is more likely to destroy lignin units linked by β–O–4′ bonds to G-type lignin with less steric hindrance, resulting in the least amount of β–O–4′ linkages. In addition, dehydration and demethylation of lignin occurred during the dissolution of ionic liquid.
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matchkey_str	article:1788618X:2018----::rprtoadtutrlhrceiainfinnirnnprilsihoilq
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allfields	10.3144/expresspolymlett.2018.80 doi (DE-627)DOAJ008064741 (DE-599)DOAJ5602f0a8bb714c28b66e59cd04373897 DE-627 ger DE-627 rakwb eng TA401-492 TP1-1185 C. Liu verfasserin aut Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In the present research, 1,3-dimethyl-imidazolium dimethyl phosphate ([Mmim][DMP]) ionic liquid was applied to dissolve alkali lignin from wheat grass to prepare for lignin micro/nano-particles. The alkali lignin can be dissolved completely at 80 °C in 30 min under microwave condition with [Mmim][DMP] (solid-liquid ratio of 1:10) which is easy to be recycled. The dissolved lignin can be precipitated by diluting the ionic liquid-lignin solution with water to get lignin micro/nano-particles with diameter ranged from 200 nm to 1.5 µm. Structural analyses with Gel permeation chromatography (GPC), 2D heteronuclear single quantum coherence nuclear magnetic resonance (2D-NMR), Thermogravimetric Analysis (TGA), etc., indicate that a large number of dehydration reactions occurred during dissolution process to result in the generation of unsaturated bonds with higher degree of unsaturation (ω) (from 197–334), lower polydispersity (from 1.49 to 1.12) and lower average molecular weight (from 8634 to 5406 Da). Compared with original alkali lignin, the regenerated alkali lignin as micro/nano-particles showed higher thermal stability. It was also found from the 2D NMR spectra that the cleavages of aryl-ether bonds dramatically happened during the dissolution process, [Mmim][DMP] ionic liquid is more likely to destroy lignin units linked by β–O–4′ bonds to G-type lignin with less steric hindrance, resulting in the least amount of β–O–4′ linkages. In addition, dehydration and demethylation of lignin occurred during the dissolution of ionic liquid. Nanomaterials ionic liquid alkali lignin dissolution micro/nano-particles Materials of engineering and construction. Mechanics of materials Chemical technology Y. M. Li verfasserin aut Y. Hou verfasserin aut In eXPRESS Polymer Letters Budapest University of Technology, 2010 12(2018), 10, Seite 946-956 (DE-627)55983909X (DE-600)2414288-8 1788618X nnns volume:12 year:2018 number:10 pages:946-956 https://doi.org/10.3144/expresspolymlett.2018.80 kostenfrei https://doaj.org/article/5602f0a8bb714c28b66e59cd04373897 kostenfrei http://www.expresspolymlett.com/letolt.php?file=EPL-0009196&mi=cd kostenfrei https://doaj.org/toc/1788-618X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2018 10 946-956
spelling	10.3144/expresspolymlett.2018.80 doi (DE-627)DOAJ008064741 (DE-599)DOAJ5602f0a8bb714c28b66e59cd04373897 DE-627 ger DE-627 rakwb eng TA401-492 TP1-1185 C. Liu verfasserin aut Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In the present research, 1,3-dimethyl-imidazolium dimethyl phosphate ([Mmim][DMP]) ionic liquid was applied to dissolve alkali lignin from wheat grass to prepare for lignin micro/nano-particles. The alkali lignin can be dissolved completely at 80 °C in 30 min under microwave condition with [Mmim][DMP] (solid-liquid ratio of 1:10) which is easy to be recycled. The dissolved lignin can be precipitated by diluting the ionic liquid-lignin solution with water to get lignin micro/nano-particles with diameter ranged from 200 nm to 1.5 µm. Structural analyses with Gel permeation chromatography (GPC), 2D heteronuclear single quantum coherence nuclear magnetic resonance (2D-NMR), Thermogravimetric Analysis (TGA), etc., indicate that a large number of dehydration reactions occurred during dissolution process to result in the generation of unsaturated bonds with higher degree of unsaturation (ω) (from 197–334), lower polydispersity (from 1.49 to 1.12) and lower average molecular weight (from 8634 to 5406 Da). Compared with original alkali lignin, the regenerated alkali lignin as micro/nano-particles showed higher thermal stability. It was also found from the 2D NMR spectra that the cleavages of aryl-ether bonds dramatically happened during the dissolution process, [Mmim][DMP] ionic liquid is more likely to destroy lignin units linked by β–O–4′ bonds to G-type lignin with less steric hindrance, resulting in the least amount of β–O–4′ linkages. In addition, dehydration and demethylation of lignin occurred during the dissolution of ionic liquid. Nanomaterials ionic liquid alkali lignin dissolution micro/nano-particles Materials of engineering and construction. Mechanics of materials Chemical technology Y. M. Li verfasserin aut Y. Hou verfasserin aut In eXPRESS Polymer Letters Budapest University of Technology, 2010 12(2018), 10, Seite 946-956 (DE-627)55983909X (DE-600)2414288-8 1788618X nnns volume:12 year:2018 number:10 pages:946-956 https://doi.org/10.3144/expresspolymlett.2018.80 kostenfrei https://doaj.org/article/5602f0a8bb714c28b66e59cd04373897 kostenfrei http://www.expresspolymlett.com/letolt.php?file=EPL-0009196&mi=cd kostenfrei https://doaj.org/toc/1788-618X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2018 10 946-956
allfields_unstemmed	10.3144/expresspolymlett.2018.80 doi (DE-627)DOAJ008064741 (DE-599)DOAJ5602f0a8bb714c28b66e59cd04373897 DE-627 ger DE-627 rakwb eng TA401-492 TP1-1185 C. Liu verfasserin aut Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In the present research, 1,3-dimethyl-imidazolium dimethyl phosphate ([Mmim][DMP]) ionic liquid was applied to dissolve alkali lignin from wheat grass to prepare for lignin micro/nano-particles. The alkali lignin can be dissolved completely at 80 °C in 30 min under microwave condition with [Mmim][DMP] (solid-liquid ratio of 1:10) which is easy to be recycled. The dissolved lignin can be precipitated by diluting the ionic liquid-lignin solution with water to get lignin micro/nano-particles with diameter ranged from 200 nm to 1.5 µm. Structural analyses with Gel permeation chromatography (GPC), 2D heteronuclear single quantum coherence nuclear magnetic resonance (2D-NMR), Thermogravimetric Analysis (TGA), etc., indicate that a large number of dehydration reactions occurred during dissolution process to result in the generation of unsaturated bonds with higher degree of unsaturation (ω) (from 197–334), lower polydispersity (from 1.49 to 1.12) and lower average molecular weight (from 8634 to 5406 Da). Compared with original alkali lignin, the regenerated alkali lignin as micro/nano-particles showed higher thermal stability. It was also found from the 2D NMR spectra that the cleavages of aryl-ether bonds dramatically happened during the dissolution process, [Mmim][DMP] ionic liquid is more likely to destroy lignin units linked by β–O–4′ bonds to G-type lignin with less steric hindrance, resulting in the least amount of β–O–4′ linkages. In addition, dehydration and demethylation of lignin occurred during the dissolution of ionic liquid. Nanomaterials ionic liquid alkali lignin dissolution micro/nano-particles Materials of engineering and construction. Mechanics of materials Chemical technology Y. M. Li verfasserin aut Y. Hou verfasserin aut In eXPRESS Polymer Letters Budapest University of Technology, 2010 12(2018), 10, Seite 946-956 (DE-627)55983909X (DE-600)2414288-8 1788618X nnns volume:12 year:2018 number:10 pages:946-956 https://doi.org/10.3144/expresspolymlett.2018.80 kostenfrei https://doaj.org/article/5602f0a8bb714c28b66e59cd04373897 kostenfrei http://www.expresspolymlett.com/letolt.php?file=EPL-0009196&mi=cd kostenfrei https://doaj.org/toc/1788-618X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2018 10 946-956
allfieldsGer	10.3144/expresspolymlett.2018.80 doi (DE-627)DOAJ008064741 (DE-599)DOAJ5602f0a8bb714c28b66e59cd04373897 DE-627 ger DE-627 rakwb eng TA401-492 TP1-1185 C. Liu verfasserin aut Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In the present research, 1,3-dimethyl-imidazolium dimethyl phosphate ([Mmim][DMP]) ionic liquid was applied to dissolve alkali lignin from wheat grass to prepare for lignin micro/nano-particles. The alkali lignin can be dissolved completely at 80 °C in 30 min under microwave condition with [Mmim][DMP] (solid-liquid ratio of 1:10) which is easy to be recycled. The dissolved lignin can be precipitated by diluting the ionic liquid-lignin solution with water to get lignin micro/nano-particles with diameter ranged from 200 nm to 1.5 µm. Structural analyses with Gel permeation chromatography (GPC), 2D heteronuclear single quantum coherence nuclear magnetic resonance (2D-NMR), Thermogravimetric Analysis (TGA), etc., indicate that a large number of dehydration reactions occurred during dissolution process to result in the generation of unsaturated bonds with higher degree of unsaturation (ω) (from 197–334), lower polydispersity (from 1.49 to 1.12) and lower average molecular weight (from 8634 to 5406 Da). Compared with original alkali lignin, the regenerated alkali lignin as micro/nano-particles showed higher thermal stability. It was also found from the 2D NMR spectra that the cleavages of aryl-ether bonds dramatically happened during the dissolution process, [Mmim][DMP] ionic liquid is more likely to destroy lignin units linked by β–O–4′ bonds to G-type lignin with less steric hindrance, resulting in the least amount of β–O–4′ linkages. In addition, dehydration and demethylation of lignin occurred during the dissolution of ionic liquid. Nanomaterials ionic liquid alkali lignin dissolution micro/nano-particles Materials of engineering and construction. Mechanics of materials Chemical technology Y. M. Li verfasserin aut Y. Hou verfasserin aut In eXPRESS Polymer Letters Budapest University of Technology, 2010 12(2018), 10, Seite 946-956 (DE-627)55983909X (DE-600)2414288-8 1788618X nnns volume:12 year:2018 number:10 pages:946-956 https://doi.org/10.3144/expresspolymlett.2018.80 kostenfrei https://doaj.org/article/5602f0a8bb714c28b66e59cd04373897 kostenfrei http://www.expresspolymlett.com/letolt.php?file=EPL-0009196&mi=cd kostenfrei https://doaj.org/toc/1788-618X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2018 10 946-956
allfieldsSound	10.3144/expresspolymlett.2018.80 doi (DE-627)DOAJ008064741 (DE-599)DOAJ5602f0a8bb714c28b66e59cd04373897 DE-627 ger DE-627 rakwb eng TA401-492 TP1-1185 C. Liu verfasserin aut Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier In the present research, 1,3-dimethyl-imidazolium dimethyl phosphate ([Mmim][DMP]) ionic liquid was applied to dissolve alkali lignin from wheat grass to prepare for lignin micro/nano-particles. The alkali lignin can be dissolved completely at 80 °C in 30 min under microwave condition with [Mmim][DMP] (solid-liquid ratio of 1:10) which is easy to be recycled. The dissolved lignin can be precipitated by diluting the ionic liquid-lignin solution with water to get lignin micro/nano-particles with diameter ranged from 200 nm to 1.5 µm. Structural analyses with Gel permeation chromatography (GPC), 2D heteronuclear single quantum coherence nuclear magnetic resonance (2D-NMR), Thermogravimetric Analysis (TGA), etc., indicate that a large number of dehydration reactions occurred during dissolution process to result in the generation of unsaturated bonds with higher degree of unsaturation (ω) (from 197–334), lower polydispersity (from 1.49 to 1.12) and lower average molecular weight (from 8634 to 5406 Da). Compared with original alkali lignin, the regenerated alkali lignin as micro/nano-particles showed higher thermal stability. It was also found from the 2D NMR spectra that the cleavages of aryl-ether bonds dramatically happened during the dissolution process, [Mmim][DMP] ionic liquid is more likely to destroy lignin units linked by β–O–4′ bonds to G-type lignin with less steric hindrance, resulting in the least amount of β–O–4′ linkages. In addition, dehydration and demethylation of lignin occurred during the dissolution of ionic liquid. Nanomaterials ionic liquid alkali lignin dissolution micro/nano-particles Materials of engineering and construction. Mechanics of materials Chemical technology Y. M. Li verfasserin aut Y. Hou verfasserin aut In eXPRESS Polymer Letters Budapest University of Technology, 2010 12(2018), 10, Seite 946-956 (DE-627)55983909X (DE-600)2414288-8 1788618X nnns volume:12 year:2018 number:10 pages:946-956 https://doi.org/10.3144/expresspolymlett.2018.80 kostenfrei https://doaj.org/article/5602f0a8bb714c28b66e59cd04373897 kostenfrei http://www.expresspolymlett.com/letolt.php?file=EPL-0009196&mi=cd kostenfrei https://doaj.org/toc/1788-618X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_2190 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2018 10 946-956
language	English
source	In eXPRESS Polymer Letters 12(2018), 10, Seite 946-956 volume:12 year:2018 number:10 pages:946-956
sourceStr	In eXPRESS Polymer Letters 12(2018), 10, Seite 946-956 volume:12 year:2018 number:10 pages:946-956
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Nanomaterials ionic liquid alkali lignin dissolution micro/nano-particles Materials of engineering and construction. Mechanics of materials Chemical technology
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container_title	eXPRESS Polymer Letters
authorswithroles_txt_mv	C. Liu @@aut@@ Y. M. Li @@aut@@ Y. Hou @@aut@@
publishDateDaySort_date	2018-01-01T00:00:00Z
hierarchy_top_id	55983909X
id	DOAJ008064741
language_de	englisch
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Liu</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2018</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">In the present research, 1,3-dimethyl-imidazolium dimethyl phosphate ([Mmim][DMP]) ionic liquid was applied to dissolve alkali lignin from wheat grass to prepare for lignin micro/nano-particles. The alkali lignin can be dissolved completely at 80 °C in 30 min under microwave condition with [Mmim][DMP] (solid-liquid ratio of 1:10) which is easy to be recycled. The dissolved lignin can be precipitated by diluting the ionic liquid-lignin solution with water to get lignin micro/nano-particles with diameter ranged from 200 nm to 1.5 µm. Structural analyses with Gel permeation chromatography (GPC), 2D heteronuclear single quantum coherence nuclear magnetic resonance (2D-NMR), Thermogravimetric Analysis (TGA), etc., indicate that a large number of dehydration reactions occurred during dissolution process to result in the generation of unsaturated bonds with higher degree of unsaturation (ω) (from 197–334), lower polydispersity (from 1.49 to 1.12) and lower average molecular weight (from 8634 to 5406 Da). Compared with original alkali lignin, the regenerated alkali lignin as micro/nano-particles showed higher thermal stability. 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callnumber-first	T - Technology
author	C. Liu
spellingShingle	C. Liu misc TA401-492 misc TP1-1185 misc Nanomaterials misc ionic liquid misc alkali lignin misc dissolution misc micro/nano-particles misc Materials of engineering and construction. Mechanics of materials misc Chemical technology Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly
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topic_title	TA401-492 TP1-1185 Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly Nanomaterials ionic liquid alkali lignin dissolution micro/nano-particles
topic	misc TA401-492 misc TP1-1185 misc Nanomaterials misc ionic liquid misc alkali lignin misc dissolution misc micro/nano-particles misc Materials of engineering and construction. Mechanics of materials misc Chemical technology
topic_unstemmed	misc TA401-492 misc TP1-1185 misc Nanomaterials misc ionic liquid misc alkali lignin misc dissolution misc micro/nano-particles misc Materials of engineering and construction. Mechanics of materials misc Chemical technology
topic_browse	misc TA401-492 misc TP1-1185 misc Nanomaterials misc ionic liquid misc alkali lignin misc dissolution misc micro/nano-particles misc Materials of engineering and construction. Mechanics of materials misc Chemical technology
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title	Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly
ctrlnum	(DE-627)DOAJ008064741 (DE-599)DOAJ5602f0a8bb714c28b66e59cd04373897
title_full	Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly
author_sort	C. Liu
journal	eXPRESS Polymer Letters
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title_sort	preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly
callnumber	TA401-492
title_auth	Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly
abstract	In the present research, 1,3-dimethyl-imidazolium dimethyl phosphate ([Mmim][DMP]) ionic liquid was applied to dissolve alkali lignin from wheat grass to prepare for lignin micro/nano-particles. The alkali lignin can be dissolved completely at 80 °C in 30 min under microwave condition with [Mmim][DMP] (solid-liquid ratio of 1:10) which is easy to be recycled. The dissolved lignin can be precipitated by diluting the ionic liquid-lignin solution with water to get lignin micro/nano-particles with diameter ranged from 200 nm to 1.5 µm. Structural analyses with Gel permeation chromatography (GPC), 2D heteronuclear single quantum coherence nuclear magnetic resonance (2D-NMR), Thermogravimetric Analysis (TGA), etc., indicate that a large number of dehydration reactions occurred during dissolution process to result in the generation of unsaturated bonds with higher degree of unsaturation (ω) (from 197–334), lower polydispersity (from 1.49 to 1.12) and lower average molecular weight (from 8634 to 5406 Da). Compared with original alkali lignin, the regenerated alkali lignin as micro/nano-particles showed higher thermal stability. It was also found from the 2D NMR spectra that the cleavages of aryl-ether bonds dramatically happened during the dissolution process, [Mmim][DMP] ionic liquid is more likely to destroy lignin units linked by β–O–4′ bonds to G-type lignin with less steric hindrance, resulting in the least amount of β–O–4′ linkages. In addition, dehydration and demethylation of lignin occurred during the dissolution of ionic liquid.
abstractGer	In the present research, 1,3-dimethyl-imidazolium dimethyl phosphate ([Mmim][DMP]) ionic liquid was applied to dissolve alkali lignin from wheat grass to prepare for lignin micro/nano-particles. The alkali lignin can be dissolved completely at 80 °C in 30 min under microwave condition with [Mmim][DMP] (solid-liquid ratio of 1:10) which is easy to be recycled. The dissolved lignin can be precipitated by diluting the ionic liquid-lignin solution with water to get lignin micro/nano-particles with diameter ranged from 200 nm to 1.5 µm. Structural analyses with Gel permeation chromatography (GPC), 2D heteronuclear single quantum coherence nuclear magnetic resonance (2D-NMR), Thermogravimetric Analysis (TGA), etc., indicate that a large number of dehydration reactions occurred during dissolution process to result in the generation of unsaturated bonds with higher degree of unsaturation (ω) (from 197–334), lower polydispersity (from 1.49 to 1.12) and lower average molecular weight (from 8634 to 5406 Da). Compared with original alkali lignin, the regenerated alkali lignin as micro/nano-particles showed higher thermal stability. It was also found from the 2D NMR spectra that the cleavages of aryl-ether bonds dramatically happened during the dissolution process, [Mmim][DMP] ionic liquid is more likely to destroy lignin units linked by β–O–4′ bonds to G-type lignin with less steric hindrance, resulting in the least amount of β–O–4′ linkages. In addition, dehydration and demethylation of lignin occurred during the dissolution of ionic liquid.
abstract_unstemmed	In the present research, 1,3-dimethyl-imidazolium dimethyl phosphate ([Mmim][DMP]) ionic liquid was applied to dissolve alkali lignin from wheat grass to prepare for lignin micro/nano-particles. The alkali lignin can be dissolved completely at 80 °C in 30 min under microwave condition with [Mmim][DMP] (solid-liquid ratio of 1:10) which is easy to be recycled. The dissolved lignin can be precipitated by diluting the ionic liquid-lignin solution with water to get lignin micro/nano-particles with diameter ranged from 200 nm to 1.5 µm. Structural analyses with Gel permeation chromatography (GPC), 2D heteronuclear single quantum coherence nuclear magnetic resonance (2D-NMR), Thermogravimetric Analysis (TGA), etc., indicate that a large number of dehydration reactions occurred during dissolution process to result in the generation of unsaturated bonds with higher degree of unsaturation (ω) (from 197–334), lower polydispersity (from 1.49 to 1.12) and lower average molecular weight (from 8634 to 5406 Da). Compared with original alkali lignin, the regenerated alkali lignin as micro/nano-particles showed higher thermal stability. It was also found from the 2D NMR spectra that the cleavages of aryl-ether bonds dramatically happened during the dissolution process, [Mmim][DMP] ionic liquid is more likely to destroy lignin units linked by β–O–4′ bonds to G-type lignin with less steric hindrance, resulting in the least amount of β–O–4′ linkages. In addition, dehydration and demethylation of lignin occurred during the dissolution of ionic liquid.
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container_issue	10
title_short	Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly
url	https://doi.org/10.3144/expresspolymlett.2018.80 https://doaj.org/article/5602f0a8bb714c28b66e59cd04373897 http://www.expresspolymlett.com/letolt.php?file=EPL-0009196&mi=cd https://doaj.org/toc/1788-618X
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Preparation and structural characterization of lignin micro/nano-particles with ionic liquid treatment by self-assembly

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