Small-angle X-ray scattering study on the structure of microcrystalline and nanofibrillated cellulose

K. Leppänen, K. Pirkkalainen, P. Penttilä, Jenni Sievänen, N. Kotelnikova, R. Serimaa

Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

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Abstract

The effects of different solvents on the structure of microcrystalline and nanofibrillated cellulose (MCC, NFC) were studied using small-angle x-ray scattering (SAXS). MCC was immersed in water, ethanol, and acetone, and NFC was immersed only in water and ethanol, but studied also in the form of foam-like water-NFC-gel in wet, air-dried and re-wet states. The solvent affected the average chord length, which reveals the typical length scale of the structure of the sample: 2.4 ± 0.1 nm was obtained for MCC-water, 2.5 ± 0.1 nm for re-wet NFC-gel, 1.6 ± 0.1 nm for MCC-ethanol, 1.2 ± 0.1 nm for NFC-ethanol, and 1.3 ± 0.1 nm for MCC-acetone. The specific surface of cellulose increased strongly when MCC and NFC were immersed in the solvents compared to dry cellulose. The specific surface of cellulose was determined to be larger for NFC-water than MCC-water, and slightly larger for dry NFC powder than for dry MCC, which can be explained by the fact that the width of cellulose crystallites perpendicular to the cellulose chain direction was slightly larger in MCC than in NFC on the basis of wide-angle x-ray scattering results.
Original languageEnglish
Article number012030
Number of pages11
JournalJournal of Physics: Conference Series
Volume247
Issue number1
DOIs
Publication statusPublished - 2010
MoE publication typeA4 Article in a conference publication
EventXIV International Conference on Small-Angle Scattering, SAS09 - Oxford, United Kingdom
Duration: 13 Sep 200918 Sep 2009

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cellulose
ethyl alcohol
scattering
water
x rays
x ray scattering
acetone
gels
foams
crystallites
air

Cite this

Leppänen, K., Pirkkalainen, K., Penttilä, P., Sievänen, J., Kotelnikova, N., & Serimaa, R. (2010). Small-angle X-ray scattering study on the structure of microcrystalline and nanofibrillated cellulose. Journal of Physics: Conference Series, 247(1), [012030]. https://doi.org/10.1088/1742-6596/247/1/012030
Leppänen, K. ; Pirkkalainen, K. ; Penttilä, P. ; Sievänen, Jenni ; Kotelnikova, N. ; Serimaa, R. / Small-angle X-ray scattering study on the structure of microcrystalline and nanofibrillated cellulose. In: Journal of Physics: Conference Series. 2010 ; Vol. 247, No. 1.
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abstract = "The effects of different solvents on the structure of microcrystalline and nanofibrillated cellulose (MCC, NFC) were studied using small-angle x-ray scattering (SAXS). MCC was immersed in water, ethanol, and acetone, and NFC was immersed only in water and ethanol, but studied also in the form of foam-like water-NFC-gel in wet, air-dried and re-wet states. The solvent affected the average chord length, which reveals the typical length scale of the structure of the sample: 2.4 ± 0.1 nm was obtained for MCC-water, 2.5 ± 0.1 nm for re-wet NFC-gel, 1.6 ± 0.1 nm for MCC-ethanol, 1.2 ± 0.1 nm for NFC-ethanol, and 1.3 ± 0.1 nm for MCC-acetone. The specific surface of cellulose increased strongly when MCC and NFC were immersed in the solvents compared to dry cellulose. The specific surface of cellulose was determined to be larger for NFC-water than MCC-water, and slightly larger for dry NFC powder than for dry MCC, which can be explained by the fact that the width of cellulose crystallites perpendicular to the cellulose chain direction was slightly larger in MCC than in NFC on the basis of wide-angle x-ray scattering results.",
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Leppänen, K, Pirkkalainen, K, Penttilä, P, Sievänen, J, Kotelnikova, N & Serimaa, R 2010, 'Small-angle X-ray scattering study on the structure of microcrystalline and nanofibrillated cellulose', Journal of Physics: Conference Series, vol. 247, no. 1, 012030. https://doi.org/10.1088/1742-6596/247/1/012030

Small-angle X-ray scattering study on the structure of microcrystalline and nanofibrillated cellulose. / Leppänen, K.; Pirkkalainen, K.; Penttilä, P.; Sievänen, Jenni; Kotelnikova, N.; Serimaa, R.

In: Journal of Physics: Conference Series, Vol. 247, No. 1, 012030, 2010.

Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

TY - JOUR

T1 - Small-angle X-ray scattering study on the structure of microcrystalline and nanofibrillated cellulose

AU - Leppänen, K.

AU - Pirkkalainen, K.

AU - Penttilä, P.

AU - Sievänen, Jenni

AU - Kotelnikova, N.

AU - Serimaa, R.

PY - 2010

Y1 - 2010

N2 - The effects of different solvents on the structure of microcrystalline and nanofibrillated cellulose (MCC, NFC) were studied using small-angle x-ray scattering (SAXS). MCC was immersed in water, ethanol, and acetone, and NFC was immersed only in water and ethanol, but studied also in the form of foam-like water-NFC-gel in wet, air-dried and re-wet states. The solvent affected the average chord length, which reveals the typical length scale of the structure of the sample: 2.4 ± 0.1 nm was obtained for MCC-water, 2.5 ± 0.1 nm for re-wet NFC-gel, 1.6 ± 0.1 nm for MCC-ethanol, 1.2 ± 0.1 nm for NFC-ethanol, and 1.3 ± 0.1 nm for MCC-acetone. The specific surface of cellulose increased strongly when MCC and NFC were immersed in the solvents compared to dry cellulose. The specific surface of cellulose was determined to be larger for NFC-water than MCC-water, and slightly larger for dry NFC powder than for dry MCC, which can be explained by the fact that the width of cellulose crystallites perpendicular to the cellulose chain direction was slightly larger in MCC than in NFC on the basis of wide-angle x-ray scattering results.

AB - The effects of different solvents on the structure of microcrystalline and nanofibrillated cellulose (MCC, NFC) were studied using small-angle x-ray scattering (SAXS). MCC was immersed in water, ethanol, and acetone, and NFC was immersed only in water and ethanol, but studied also in the form of foam-like water-NFC-gel in wet, air-dried and re-wet states. The solvent affected the average chord length, which reveals the typical length scale of the structure of the sample: 2.4 ± 0.1 nm was obtained for MCC-water, 2.5 ± 0.1 nm for re-wet NFC-gel, 1.6 ± 0.1 nm for MCC-ethanol, 1.2 ± 0.1 nm for NFC-ethanol, and 1.3 ± 0.1 nm for MCC-acetone. The specific surface of cellulose increased strongly when MCC and NFC were immersed in the solvents compared to dry cellulose. The specific surface of cellulose was determined to be larger for NFC-water than MCC-water, and slightly larger for dry NFC powder than for dry MCC, which can be explained by the fact that the width of cellulose crystallites perpendicular to the cellulose chain direction was slightly larger in MCC than in NFC on the basis of wide-angle x-ray scattering results.

U2 - 10.1088/1742-6596/247/1/012030

DO - 10.1088/1742-6596/247/1/012030

M3 - Article in a proceedings journal

VL - 247

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012030

ER -