Controlling the surface accessibility of nanofibrillated cellulose

M. Österberg, Tekla Tammelin, Soledad Peresin, L.-S. Johansson

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Abstract

Well-defined surface chemistry and retained nanofibrillar structure are crucial for gaining full performance of nanocellulosic materials in modern material science. Nevertheless there is evidence that pure never-dried cellulose surfaces become contaminated and nanofibrillated cellulose (NFC) aggregates when in contact with air or other aprotic media, and as a consequence the efficient use of the cellulosic material is hampered. The aim of this work was to create a link between surface chemistry and surface accessibility of NFC. We demonstrate the effect of the amphiphilic nature of cellulose on the interactions with various solvents. For this purpose X-ray photoelectron spectroscopy, atomic force microscopy and contact angle measurements are combined. Special focus is laid on the changes in surface energy of cellulose in different media. The findings are general for cellulosic samples but critical for efficient surface modification and use of NFC in various applications and thus the experimental examples are on NFC.
Original languageEnglish
Title of host publication243rd ACS National Meeting & Exposition
PublisherAmerican Chemical Society ACS
Publication statusPublished - 2012
Event243rd ACS National Meeting and Exposition - San Diego, United States
Duration: 25 Mar 201229 Mar 2012
Conference number: 243

Publication series

SeriesAbstracts of Papers: The American Chemical Society
Volume243
ISSN0065-7727

Conference

Conference243rd ACS National Meeting and Exposition
CountryUnited States
CitySan Diego
Period25/03/1229/03/12

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    Österberg, M., Tammelin, T., Peresin, S., & Johansson, L-S. (2012). Controlling the surface accessibility of nanofibrillated cellulose. In 243rd ACS National Meeting & Exposition American Chemical Society ACS. Abstracts of Papers: The American Chemical Society, Vol.. 243