Understanding the role of water in the interaction of ionic liquids with wood polymers

Tutkimustuotos: Lehtiartikkeli

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Understanding the role of water in the interaction of ionic liquids with wood polymers. / Roselli, A.; Hummel, M.; Vartiainen, J.; Nieminen, K.; Sixta, H.

julkaisussa: Carbohydrate Polymers, Vuosikerta 168, 15.07.2017, s. 121-128.

Tutkimustuotos: Lehtiartikkeli

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Bibtex - Lataa

@article{6493fdb79d764c618e9865d92148487d,
title = "Understanding the role of water in the interaction of ionic liquids with wood polymers",
abstract = "Hemicellulose lean pulps are a raw material source for numerous high value products. We have previously presented the IONCELL-P(ulp) process, a hemicellulose extraction method, based on a binary mixture of ionic liquid and water. The IONCELL-P process does not suffer from yield losses or polymer degradation and retains the Cellulose I crystalline form. In this paper, a selection of cellulose dissolving ionic liquids is tested, in order to compare their applicability in the process. We demonstrate that the extraction selectivity towards low molar mass polymers is related to the anion's ability to accept hydrogen bonds (Kamlet-Taft β-value), if divided by the water molar fraction of the solvent system. Pulp consistency, solvent system viscosity and pH are investigated in order to identify the factors affecting the extraction efficiency. The results show that all the tested ionic liquid-water mixtures were able to dissolve hemicelluloses, but there were differences in their efficiency, selectivity and the ability to process high pulp consistencies.",
keywords = "Dissolving pulp, Fractionation, Ionic liquid, Xylan",
author = "A. Roselli and M. Hummel and J. Vartiainen and K. Nieminen and H. Sixta",
year = "2017",
month = "7",
day = "15",
doi = "10.1016/j.carbpol.2017.03.013",
language = "English",
volume = "168",
pages = "121--128",
journal = "Carbohydrate Polymers",
issn = "0144-8617",

}

RIS - Lataa

TY - JOUR

T1 - Understanding the role of water in the interaction of ionic liquids with wood polymers

AU - Roselli, A.

AU - Hummel, M.

AU - Vartiainen, J.

AU - Nieminen, K.

AU - Sixta, H.

PY - 2017/7/15

Y1 - 2017/7/15

N2 - Hemicellulose lean pulps are a raw material source for numerous high value products. We have previously presented the IONCELL-P(ulp) process, a hemicellulose extraction method, based on a binary mixture of ionic liquid and water. The IONCELL-P process does not suffer from yield losses or polymer degradation and retains the Cellulose I crystalline form. In this paper, a selection of cellulose dissolving ionic liquids is tested, in order to compare their applicability in the process. We demonstrate that the extraction selectivity towards low molar mass polymers is related to the anion's ability to accept hydrogen bonds (Kamlet-Taft β-value), if divided by the water molar fraction of the solvent system. Pulp consistency, solvent system viscosity and pH are investigated in order to identify the factors affecting the extraction efficiency. The results show that all the tested ionic liquid-water mixtures were able to dissolve hemicelluloses, but there were differences in their efficiency, selectivity and the ability to process high pulp consistencies.

AB - Hemicellulose lean pulps are a raw material source for numerous high value products. We have previously presented the IONCELL-P(ulp) process, a hemicellulose extraction method, based on a binary mixture of ionic liquid and water. The IONCELL-P process does not suffer from yield losses or polymer degradation and retains the Cellulose I crystalline form. In this paper, a selection of cellulose dissolving ionic liquids is tested, in order to compare their applicability in the process. We demonstrate that the extraction selectivity towards low molar mass polymers is related to the anion's ability to accept hydrogen bonds (Kamlet-Taft β-value), if divided by the water molar fraction of the solvent system. Pulp consistency, solvent system viscosity and pH are investigated in order to identify the factors affecting the extraction efficiency. The results show that all the tested ionic liquid-water mixtures were able to dissolve hemicelluloses, but there were differences in their efficiency, selectivity and the ability to process high pulp consistencies.

KW - Dissolving pulp

KW - Fractionation

KW - Ionic liquid

KW - Xylan

UR - http://www.scopus.com/inward/record.url?scp=85016414526&partnerID=8YFLogxK

U2 - 10.1016/j.carbpol.2017.03.013

DO - 10.1016/j.carbpol.2017.03.013

M3 - Article

VL - 168

SP - 121

EP - 128

JO - Carbohydrate Polymers

JF - Carbohydrate Polymers

SN - 0144-8617

ER -

ID: 11624391