From wet to dry: Controlling the adaption process at the nanofibrillated cellulose surfaces

Leena-Sisko Johansson, Tekla Tammelin, Harri Setälä, Joseph Campbell, Monika Österberg

Research output: Contribution to conferenceConference AbstractScientificpeer-review

Abstract

When cellulosic material is removed from aqueous media, the hydrophilic surface has to adapt to the new ambient conditions, in order to remain chemically stable. In the case of macroscopic cellulose fibers, this adaptation leads to surfaces with very low and stable contamination levels. However, in the case of nanofibrillated cellulose (NFC) the accumulation of carbonaceous material on the fibril surfaces is not only significantly enhanced but also unpredictable. Yet clean cellulosic surface and retained nanofibrillar structure are crucial factors in a successful modification of NFC.We have combined XPS, AFM and water sorption studies in order to investigate the surface characteristics of never dried NFC when it is exposed to non-hydrophilic media. A simple silylation reaction confirmed that the NFC surface accessibility was significantly enhanced when a cellulose compatible solvent was used as the reaction media.
Original languageEnglish
Publication statusPublished - 27 Mar 2011
MoE publication typeNot Eligible
Event241st American Chemical Society National Meeting & Exposition - Anaheim, United States
Duration: 27 Mar 201131 Mar 2011

Conference

Conference241st American Chemical Society National Meeting & Exposition
Abbreviated title241st ACS National Meeting
CountryUnited States
CityAnaheim
Period27/03/1131/03/11

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cellulose
accessibility
X-ray spectroscopy
sorption
water
material

Cite this

Johansson, L-S., Tammelin, T., Setälä, H., Campbell, J., & Österberg, M. (2011). From wet to dry: Controlling the adaption process at the nanofibrillated cellulose surfaces. Abstract from 241st American Chemical Society National Meeting & Exposition, Anaheim, United States.
Johansson, Leena-Sisko ; Tammelin, Tekla ; Setälä, Harri ; Campbell, Joseph ; Österberg, Monika. / From wet to dry: Controlling the adaption process at the nanofibrillated cellulose surfaces. Abstract from 241st American Chemical Society National Meeting & Exposition, Anaheim, United States.
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abstract = "When cellulosic material is removed from aqueous media, the hydrophilic surface has to adapt to the new ambient conditions, in order to remain chemically stable. In the case of macroscopic cellulose fibers, this adaptation leads to surfaces with very low and stable contamination levels. However, in the case of nanofibrillated cellulose (NFC) the accumulation of carbonaceous material on the fibril surfaces is not only significantly enhanced but also unpredictable. Yet clean cellulosic surface and retained nanofibrillar structure are crucial factors in a successful modification of NFC.We have combined XPS, AFM and water sorption studies in order to investigate the surface characteristics of never dried NFC when it is exposed to non-hydrophilic media. A simple silylation reaction confirmed that the NFC surface accessibility was significantly enhanced when a cellulose compatible solvent was used as the reaction media.",
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Johansson, L-S, Tammelin, T, Setälä, H, Campbell, J & Österberg, M 2011, 'From wet to dry: Controlling the adaption process at the nanofibrillated cellulose surfaces' 241st American Chemical Society National Meeting & Exposition, Anaheim, United States, 27/03/11 - 31/03/11, .

From wet to dry: Controlling the adaption process at the nanofibrillated cellulose surfaces. / Johansson, Leena-Sisko; Tammelin, Tekla; Setälä, Harri; Campbell, Joseph; Österberg, Monika.

2011. Abstract from 241st American Chemical Society National Meeting & Exposition, Anaheim, United States.

Research output: Contribution to conferenceConference AbstractScientificpeer-review

TY - CONF

T1 - From wet to dry: Controlling the adaption process at the nanofibrillated cellulose surfaces

AU - Johansson, Leena-Sisko

AU - Tammelin, Tekla

AU - Setälä, Harri

AU - Campbell, Joseph

AU - Österberg, Monika

PY - 2011/3/27

Y1 - 2011/3/27

N2 - When cellulosic material is removed from aqueous media, the hydrophilic surface has to adapt to the new ambient conditions, in order to remain chemically stable. In the case of macroscopic cellulose fibers, this adaptation leads to surfaces with very low and stable contamination levels. However, in the case of nanofibrillated cellulose (NFC) the accumulation of carbonaceous material on the fibril surfaces is not only significantly enhanced but also unpredictable. Yet clean cellulosic surface and retained nanofibrillar structure are crucial factors in a successful modification of NFC.We have combined XPS, AFM and water sorption studies in order to investigate the surface characteristics of never dried NFC when it is exposed to non-hydrophilic media. A simple silylation reaction confirmed that the NFC surface accessibility was significantly enhanced when a cellulose compatible solvent was used as the reaction media.

AB - When cellulosic material is removed from aqueous media, the hydrophilic surface has to adapt to the new ambient conditions, in order to remain chemically stable. In the case of macroscopic cellulose fibers, this adaptation leads to surfaces with very low and stable contamination levels. However, in the case of nanofibrillated cellulose (NFC) the accumulation of carbonaceous material on the fibril surfaces is not only significantly enhanced but also unpredictable. Yet clean cellulosic surface and retained nanofibrillar structure are crucial factors in a successful modification of NFC.We have combined XPS, AFM and water sorption studies in order to investigate the surface characteristics of never dried NFC when it is exposed to non-hydrophilic media. A simple silylation reaction confirmed that the NFC surface accessibility was significantly enhanced when a cellulose compatible solvent was used as the reaction media.

M3 - Conference Abstract

ER -

Johansson L-S, Tammelin T, Setälä H, Campbell J, Österberg M. From wet to dry: Controlling the adaption process at the nanofibrillated cellulose surfaces. 2011. Abstract from 241st American Chemical Society National Meeting & Exposition, Anaheim, United States.