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Wood Research and Technology

Holzforschung

Cellulose – Hemicelluloses – Lignin – Wood Extractives

Editor-in-Chief: Salmén, Lennart

Editorial Board: Daniel, Geoffrey / Militz, Holger / Rosenau, Thomas / Sixta, Herbert / Vuorinen, Tapani / Argyropoulos, Dimitris S. / Balakshin, Yu / Barnett, J. R. / Burgert, Ingo / Rio, Jose C. / Evans, Robert / Evtuguin, Dmitry V. / Frazier, Charles E. / Fukushima, Kazuhiko / Gindl-Altmutter, Wolfgang / Glasser, W. G. / Holmbom, Bjarne / Isogai, Akira / Kadla, John F. / Koch, Gerald / Lachenal, Dominique / Laine, Christiane / Mansfield, Shawn D. / Morrell, J.J. / Niemz, Peter / Potthast, Antje / Ragauskas, Arthur J. / Ralph, John / Rice, Robert W. / Salin, Jarl-Gunnar / Schmitt, Uwe / Schultz, Tor P. / Sipilä, Jussi / Takano, Toshiyuki / Tamminen, Tarja / Theliander, Hans / Welling, Johannes / Willför, Stefan / Yoshihara, Hiroshi


IMPACT FACTOR 2018: 2.579

CiteScore 2018: 2.43

SCImago Journal Rank (SJR) 2018: 0.829
Source Normalized Impact per Paper (SNIP) 2018: 1.082

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1437-434X
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Volume 60, Issue 3

Issues

Effect of poly(ethylene oxide) molecular mass on miscibility and hydrogen bonding with lignin

Satoshi Kubo
  • Biomaterials Chemistry, Department of Wood Science, The University of British Columbia, Vancouver, Canada
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ John F. Kadla
  • Biomaterials Chemistry, Department of Wood Science, The University of British Columbia, Vancouver, Canada
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2006-05-03 | DOI: https://doi.org/10.1515/HF.2006.040

Abstract

The effect of the molecular mass of poly(ethylene oxide) (PEO) on lignin-PEO blends was studied using thermal analysis and FT-IR. Differential scanning calorimetry (DSC) analysis revealed miscible blends over the entire blend ratio. A negative deviation in T g from a simple weighted average was observed, indicating the existence of relatively weak favorable interactions between blend components. Analysis of the data revealed no difference in the magnitude or propensity of intermolecular interactions with increasing PEO molecular mass in the kraft lignin-PEO blends. By contrast, the fitting parameters obtained for organosolv lignin were substantially different; the higher molecular mass PEO had a higher propensity to form slightly stronger intermolecular inter-actions than the lower molecular mass PEO. Low molecular mass poly(ethylene glycol) dimethylether (M-PEG)-lignin blends had a much higher degree of crystallinity than the PEO blends, resulting in an increase in T g at high PEG content. FT-IR analysis revealed the presence of strong intermolecular hydrogen bonding between lignin and PEO. However, the band shape of the νOH region of the M-PEG blends was slightly different from the PEO blends; some of the original lignin inter- and intramolecular hydrogen bonding was still present in the M-PEG-lignin blends.

Keywords: differential scanning calorimetry; DSC; FT-IR; lignin; miscibility; poly(ethylene oxide); polymer blends; thermal analysis

About the article

Corresponding author. Canada Research Chair in Advanced Biomaterials Chemistry, The University of British Columbia, Vancouver, B.C., V6T 1Z4 Canada Tel.: +1-604-857-5254 Fax: +1-604-822-9104


Received: September 28, 2005

Accepted: February 1, 2006

Published Online: 2006-05-03

Published in Print: 2006-05-01


Citation Information: Holzforschung, Volume 60, Issue 3, Pages 245–252, ISSN (Online) 1437-434X, ISSN (Print) 0018-3830, DOI: https://doi.org/10.1515/HF.2006.040.

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