Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Microfibrillated lignocellulose (MFLC) and nanopaper films from unbleached kraft softwood pulp
RISE - Research Institutes of Sweden (2017-2019), Bioeconomy, Biobased Materials. KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
RISE - Research Institutes of Sweden (2017-2019), Bioeconomy.
Show others and affiliations
2019 (English)In: Cellulose (London), ISSN 0969-0239, E-ISSN 1572-882X, Vol. 27, p. 2325-2341Article in journal (Refereed) Epub ahead of print
Abstract [en]

Microfibrillated cellulose (MFC) is an important industrial nanocellulose product and material component. New MFC grades can widen the materials property range and improve product tailoring. Microfibrillated lignocellulose (MFLC) is investigated, with the hypothesis that there is an optimum in lignin content of unbleached wood pulp fibre with respect to nanofibril yield. A series of kraft fibres with falling Kappa numbers (lower lignin content) was prepared. Fibres were beaten and fibrillated into MFLC by high-pressure microfluidization. Nano-sized fractions of fibrils were separated using centrifugation. Lignin content and carbohydrate analysis, total charge, FE-SEM, TEM microscopy and suspension rheology characterization were carried out. Fibres with Kappa number 65 (11% lignin) combined high lignin content with ease of fibrillation. This confirms an optimum in nanofibril yield as a function of lignin content, and mechanisms are discussed. MFLC from these fibres contained a 40-60 wt% fraction of nano-sized fibrils with widths in the range of 2.5-70 nm. Despite the large size distribution, data for modulus and tensile strength of MFLC films with 11% lignin were as high as 14 GPa and 240 MPa. MFLC films showed improved water contact angle of 84-88 degrees, compared to neat MFC films (< 50 degrees). All MFLC films showed substantial optical transmittance, and the fraction of haze scattering strongly correlated with defect content in the form of coarse fibrils. [GRAPHICS] .

Place, publisher, year, edition, pages
SPRINGER , 2019. Vol. 27, p. 2325-2341
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-43307DOI: 10.1007/s10570-019-02934-8OAI: oai:DiVA.org:ri-43307DiVA, id: diva2:1387951
Available from: 2020-01-23 Created: 2020-01-23 Last updated: 2020-03-30Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full texthttps://link.springer.com/article/10.1007/s10570-019-02934-8

Authority records BETA

Lindström, Tom

Search in DiVA

By author/editor
Lindström, Tom
By organisation
Biobased MaterialsBioeconomy
In the same journal
Cellulose (London)
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 21 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
v. 2.35.10