From vapour to gas: Optimising cellulose degradation with gaseous HCl

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@article{da8e70e25e3b4db3a629a360be29287a,
title = "From vapour to gas: Optimising cellulose degradation with gaseous HCl",
abstract = "A cellulose degradation technique utilizing a pressurized HCl gas (up to 100 kPa) device is introduced. High pressure HCl quickly degraded cellulose in purified cotton linters, reaching the so-called levelling-off degree of polymerisation (LODP) in less than 1.5 h. LODP marks the point where the disordered portions of cellulose microfibrils have been degraded and only the crystalline portions remain, generally signalling the end of cellulose degradation unless remarkably high concentrations are used. In the present high pressure system, however, continued hydrolysis following the LODP was detected by incremental release of sugars from the hydrolysate after its exposure to water, supposedly caused by erosion from the cellulose crystallite ends. With minimal water consumption and the ease of recycling the gaseous acid, the technique could be a potential candidate for pre-treatment considering the future production of cellulose nanomaterials, particularly cellulose nanocrystals.",
author = "Timo P{\"a}{\"a}kk{\"o}nen and Panagiotis Spiliopoulos and Aaro Knuts and Kaarlo Nieminen and Johansson, {Leena Sisko} and Eric Enqvist and Eero Kontturi",
year = "2018",
month = "6",
day = "1",
doi = "10.1039/c7re00215g",
language = "English",
volume = "3",
pages = "312--318",
journal = "Reaction Chemistry & Engineering",
issn = "2058-9883",
publisher = "Royal Society of Chemistry",
number = "3",

}

RIS - Lataa

TY - JOUR

T1 - From vapour to gas: Optimising cellulose degradation with gaseous HCl

AU - Pääkkönen, Timo

AU - Spiliopoulos, Panagiotis

AU - Knuts, Aaro

AU - Nieminen, Kaarlo

AU - Johansson, Leena Sisko

AU - Enqvist, Eric

AU - Kontturi, Eero

PY - 2018/6/1

Y1 - 2018/6/1

N2 - A cellulose degradation technique utilizing a pressurized HCl gas (up to 100 kPa) device is introduced. High pressure HCl quickly degraded cellulose in purified cotton linters, reaching the so-called levelling-off degree of polymerisation (LODP) in less than 1.5 h. LODP marks the point where the disordered portions of cellulose microfibrils have been degraded and only the crystalline portions remain, generally signalling the end of cellulose degradation unless remarkably high concentrations are used. In the present high pressure system, however, continued hydrolysis following the LODP was detected by incremental release of sugars from the hydrolysate after its exposure to water, supposedly caused by erosion from the cellulose crystallite ends. With minimal water consumption and the ease of recycling the gaseous acid, the technique could be a potential candidate for pre-treatment considering the future production of cellulose nanomaterials, particularly cellulose nanocrystals.

AB - A cellulose degradation technique utilizing a pressurized HCl gas (up to 100 kPa) device is introduced. High pressure HCl quickly degraded cellulose in purified cotton linters, reaching the so-called levelling-off degree of polymerisation (LODP) in less than 1.5 h. LODP marks the point where the disordered portions of cellulose microfibrils have been degraded and only the crystalline portions remain, generally signalling the end of cellulose degradation unless remarkably high concentrations are used. In the present high pressure system, however, continued hydrolysis following the LODP was detected by incremental release of sugars from the hydrolysate after its exposure to water, supposedly caused by erosion from the cellulose crystallite ends. With minimal water consumption and the ease of recycling the gaseous acid, the technique could be a potential candidate for pre-treatment considering the future production of cellulose nanomaterials, particularly cellulose nanocrystals.

UR - http://www.scopus.com/inward/record.url?scp=85048119909&partnerID=8YFLogxK

U2 - 10.1039/c7re00215g

DO - 10.1039/c7re00215g

M3 - Article

VL - 3

SP - 312

EP - 318

JO - Reaction Chemistry & Engineering

JF - Reaction Chemistry & Engineering

SN - 2058-9883

IS - 3

ER -

ID: 25881543