Preparation of cellulose nanocrystals from lignin-rich reject material for oil emulsification in an aqueous environment |
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Author: | Ojala, Jonna1; Sirviö, Juho A.1; Liimatainen, Henrikki1 |
Organizations: |
1University of Oulu, Fibre and Particle Engineering |
Format: | article |
Version: | accepted version |
Access: | open |
Online Access: | PDF Full Text (PDF, 1.1 MB) |
Persistent link: | http://urn.fi/urn:nbn:fi-fe2017112250823 |
Language: | English |
Published: |
Springer Nature,
2018
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Publish Date: | 2018-11-14 |
Description: |
AbstractCellulose nanocrystals (CNCs) with amphiphilic features were used in oil drop stabilization in diesel oil-in-water (o/w) emulsion. The functionalized CNCs were synthesized from a lignin-rich reject cellulose source from the pulp and paper industry, i.e., the non-bleached fines fractions of carton pulp. Partial periodate-chlorite oxidation, which was followed by reductive butylamination, was used to obtain surface-modified amphiphilic CNCs. All studied CNCs prevented droplet coalescence by stabilizing oil droplets in the emulsion thus resulting in stable o/w Pickering-like emulsions. CNCs from the fines fractions at concentrations 0.05–0.1% (weight by weight, w/w) provided high stability against creaming (i.e., phase separation), and they did not de-emulsify at low temperatures since the oil droplet size remained small at + 5 °C at a 0.05% (w/w) CNC concentration. Salinity improved the stability against creaming with the reference chemical pulp CNC, but negatively affected the emulsion creaming rate for CNCs that had a higher level of lignin. However, the non-bleached fines fraction of the pulp may provide one potential and cost-effective raw material source for the development of a novel bio-based chemical. see all
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Series: |
Cellulose |
ISSN: | 0969-0239 |
ISSN-E: | 1572-882X |
ISSN-L: | 0969-0239 |
Volume: | 25 |
Issue: | 1 |
Pages: | 293 - 304 |
DOI: | 10.1007/s10570-017-1568-3 |
OADOI: | https://oadoi.org/10.1007/s10570-017-1568-3 |
Type of Publication: |
A1 Journal article – refereed |
Field of Science: |
215 Chemical engineering |
Subjects: | |
Funding: |
This study was funded by the Academy of Finland (283187). The support of the Ahti Pekkala Foundation and the Tiina and Antti Herlin Foundation is gratefully acknowledged. |
Academy of Finland Grant Number: |
283187 |
Detailed Information: |
283187 (Academy of Finland Funding decision) |
Copyright information: |
© Springer Science+Business Media B.V., part of Springer Nature 2017. This is a post-peer-review, pre-copyedit version of an article published in Cellulose. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10570-017-1568-3. |