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Water-induced crystallization and nano-scale spinodal decomposition of cellulose in NMMO and ionic liquid dope

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A Correction to this article was published on 05 April 2019

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Abstract

We followed the cellulose structure formation induced by water diffusion into Lyocell dopes based on both N-Methylmorpholine N-oxide (NMMO) and 1,5-diazabicyclo[4.3.0]non-5-ene acetate ([DBNH][OAc], by using scanning simultaneous small- and wide-angle scattering (SAXS-WAXS) experiment along the diffusion gradient. The water content at each point was estimated from the wide-angle scattering profile, giving a binary diffusion constant of the order of 5 × 10−10 m2/sec. In the case of the cellulose solution in NMMO monohydrate, diffraction peaks corresponding to cellulose II appeared concomitantly with the increase in small angle scattering features indicative of nanofibril formation. In the cellulose solution in the ionic liquid, an increase in small angle scattering intensity with the progression of water content appeared at scattering vector q = 0.015 Å−1 corresponding to a correlation length of about 40 nm, indicative of nanometric spinodal decomposition preceding the coagulation process, though no crystalline peak appeared in the wide-angle scattering.

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  • 05 April 2019

    In the original publication of the article, the acknowledgment missed one of the funding agencies. The correct acknowledgement should be.

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Acknowledgments

We thank Dr. Isabelle Morfin, Dr. Nathalie Boudet and Dr. Nils Blanc for assistance at the D2AM beamline, and ESRF for providing beamtimes. PA has received funding from Kone Foundation.

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Authors and Affiliations

  1. University Grenoble Alpes, CNRS, CERMAV, 38000, Grenoble, France

    Yoshiharu Nishiyama

  2. Department of Bioproducts and Biosystems, Aalto University, Vuorimiehentie 1, P.O. Box 16300, 00076, Espoo, Finland

    Shirin Asaadi & Herbert Sixta

  3. Department of Physics, University of Helsinki, P.O. Box 64, 00014, Helsinki, Finland

    Patrik Ahvenainen

Authors
  1. Yoshiharu Nishiyama
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  2. Shirin Asaadi
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  3. Patrik Ahvenainen
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  4. Herbert Sixta
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Correspondence to Yoshiharu Nishiyama.

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Nishiyama, Y., Asaadi, S., Ahvenainen, P. et al. Water-induced crystallization and nano-scale spinodal decomposition of cellulose in NMMO and ionic liquid dope. Cellulose 26, 281–289 (2019). https://doi.org/10.1007/s10570-018-2148-x

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  • DOI: https://doi.org/10.1007/s10570-018-2148-x

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