Process for fibrillating lignocellulosic material, fibres and their use

Abstract

The invention relates to a process for fibrillating lignocellulosic material wherein the process comprises treating lignocellulosic material with ionic liquid and recovering basically intact fibres of said lignocellulosic material. Another object of the invention is to provide an activated and / or basically intact fibre wherein the lignocellulosic material is treated with ionic liquid and a basically intact fibre of said lignocellulosic material is recovered. The invention further relates to the use of the basically intact fibre of the invention in the production of bio-based materials, preferably bio-plastics, more preferably conductive polymers, stimuli-responsive polymers, bio-based polymer composites, ceramics, fabrics, or elastomers. A process for producing paper, board, pulp or the like from fibers of lignocellulosic material which have been treated with ionic liquid and recovered as basically intact fibres is also enclosed.

Description

technical field

[0001] The present invention relates to a method for fibrillating a lignocellulosic material, wherein the method comprises treating the lignocellulosic material with an ionic liquid and recovering substantially intact fibers of the lignocellulosic material. Typically, the method includes increasing the surface area of ​​the lignocellulosic material. Another object of the present invention is to provide an activated and / or substantially intact fiber wherein lignocellulosic material is treated with an ionic liquid and substantially intact fibers of said lignocellulosic material are recovered.

[0002] The invention also relates to the use of substantially intact fibers of the invention in the production of bio-based materials (preferably bioplastics, more preferably conductive polymers), stimuli-responsive polymers, bio-based polymer composites, ceramics, fabrics or elastomers the use of. The present invention also encompasses a method for producing paper, boar...

Examples

Embodiment 1

[0079] Embodiment 1: Preparation of 1-methyl-3-methylimidazolium dimethyl phosphate ([mmim]Me 2 PO 4 )

[0080] A mixture of 1-methylimidazole (50ml, 0.519mol) was added to trimethylphosphate (60.7ml, 0.519mol) with stirring at 100°C over 4 hours. The solution was heated at 100°C for an additional 18 hours. through via 1 H NMR / CDCl 3 A sample was analyzed to determine completion of the reaction of the mixture. The mixture was rotary evaporated under high vacuum for 18 hours to give the product as a pale yellow oil (110ml). pass 1 H NMR analysis determined the product to be >99% pure.

Embodiment 2

[0081] Example 2: Preparation of 1-ethyl-3-methylimidazolium dimethylphosphate ([emim]Me 2 PO 4 )

[0082] A mixture of 1-ethylimidazole (50ml, 0.519mol) was added to trimethylphosphate (60.7ml, 0.519mol) over 4 hours at 120°C with stirring. The solution was heated at 120°C for an additional 18 hours. through via 1 H NMR / CDCl 3 A sample was analyzed to determine completion of the reaction of the mixture. The mixture was rotary evaporated under high vacuum for 18 hours to give the product as a pale yellow oil (110ml). pass 1 H NMR analysis determined the product to be >99% pure.

Embodiment 3

[0083] Example 3: Preparation of 1-ethyl-3-methylimidazolium methylhydrogen phosphonate ([emim]MeHPO 3 )

[0084] A mixture of 1-ethylimidazole (50ml, 0.519mol) was added to diethylphosphite (47.6ml, 0.519mol) over 4 hours at 140°C with stirring. The solution was heated at 140°C for an additional 18 hours. through via 1 H NMR / CDCl 3 A sample was analyzed to determine completion of the reaction of the mixture. The mixture was rotovaped under high vacuum for 18 hours to give the product as a light yellow oil (97ml), which was obtained by 1 H NMR analysis determined the product to be >99% pure.

technical field

[0001] The present invention relates to a method for fibrillating a lignocellulosic material, wherein the method comprises treating the lignocellulosic material with an ionic liquid and recovering substantially intact fibers of the lignocellulosic material. Typically, the method includes increasing the surface area of ​​the lignocellulosic material. Another object of the present invention is to provide an activated and / or substantially intact fiber wherein lignocellulosic material is treated with an ionic liquid and substantially intact fibers of said lignocellulosic material are recovered.

[0002] The invention also relates to the use of substantially intact fibers of the invention in the production of bio-based materials (preferably bioplastics, more preferably conductive polymers), stimuli-responsive polymers, bio-based polymer composites, ceramics, fabrics or elastomers the use of. The present invention also encompasses a method for producing paper, boar...

Examples

Embodiment 1

[0079] Embodiment 1: Preparation of 1-methyl-3-methylimidazolium dimethyl phosphate ([mmim]Me 2 PO 4 )

[0080] A mixture of 1-methylimidazole (50ml, 0.519mol) was added to trimethylphosphate (60.7ml, 0.519mol) with stirring at 100°C over 4 hours. The solution was heated at 100°C for an additional 18 hours. through via 1 H NMR / CDCl 3 A sample was analyzed to determine completion of the reaction of the mixture. The mixture was rotary evaporated under high vacuum for 18 hours to give the product as a pale yellow oil (110ml). pass 1 H NMR analysis determined the product to be >99% pure.

Embodiment 2

[0081] Example 2: Preparation of 1-ethyl-3-methylimidazolium dimethylphosphate ([emim]Me 2 PO 4 )

[0082] A mixture of 1-ethylimidazole (50ml, 0.519mol) was added to trimethylphosphate (60.7ml, 0.519mol) over 4 hours at 120°C with stirring. The solution was heated at 120°C for an additional 18 hours. through via 1 H NMR / CDCl 3 A sample was analyzed to determine completion of the reaction of the mixture. The mixture was rotary evaporated under high vacuum for 18 hours to give the product as a pale yellow oil (110ml). pass 1 H NMR analysis determined the product to be >99% pure.

Embodiment 3

[0083] Example 3: Preparation of 1-ethyl-3-methylimidazolium methylhydrogen phosphonate ([emim]MeHPO 3 )

[0084] A mixture of 1-ethylimidazole (50ml, 0.519mol) was added to diethylphosphite (47.6ml, 0.519mol) over 4 hours at 140°C with stirring. The solution was heated at 140°C for an additional 18 hours. through via 1 H NMR / CDCl 3 A sample was analyzed to determine completion of the reaction of the mixture. The mixture was rotovaped under high vacuum for 18 hours to give the product as a light yellow oil (97ml), which was obtained by 1 H NMR analysis determined the product to be >99% pure.

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