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Surfactant controlled zwitterionic cellulose nanofibril dispersions

Calabrese, Vincenzo ; da Silva, Marcelo A. ; Schmitt, Julien LU ; Muñoz-Garcia, Juan C. ; Gabrielli, Valeria ; Scott, Janet L. ; Angulo, Jesus ; Khimyak, Yaroslav Z. and Edler, Karen J. LU orcid (2018) In Soft Matter 14(38). p.7793-7800
Abstract

Zwitterionic cellulose nanofibrils (ZCNFs) with an isoelectric point of 3.4 were obtained by grafting glycidyltrimethylammonium chloride onto TEMPO/NaBr/NaOCl-oxidised cellulose nanofibrils. The ZCNF aqueous dispersions were characterized via transmission electron microscopy, rheology and small angle neutron scattering, revealing a fibril-bundle structure with pronounced aggregation at pH 7. Surfactants were successfully employed to tune the stability of the ZCNF dispersions. Upon addition of the anionic surfactant, sodium dodecyl sulfate, the ZCNF dispersion shows individualized fibrils due to electrostatic stabilization. In contrast, upon addition of the cationic species dodecyltrimethylammonium bromide, the dispersion undergoes... (More)

Zwitterionic cellulose nanofibrils (ZCNFs) with an isoelectric point of 3.4 were obtained by grafting glycidyltrimethylammonium chloride onto TEMPO/NaBr/NaOCl-oxidised cellulose nanofibrils. The ZCNF aqueous dispersions were characterized via transmission electron microscopy, rheology and small angle neutron scattering, revealing a fibril-bundle structure with pronounced aggregation at pH 7. Surfactants were successfully employed to tune the stability of the ZCNF dispersions. Upon addition of the anionic surfactant, sodium dodecyl sulfate, the ZCNF dispersion shows individualized fibrils due to electrostatic stabilization. In contrast, upon addition of the cationic species dodecyltrimethylammonium bromide, the dispersion undergoes charge neutralization, leading to more pronounced flocculation.

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author
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publishing date
type
Contribution to journal
publication status
published
in
Soft Matter
volume
14
issue
38
pages
8 pages
publisher
Royal Society of Chemistry
external identifiers
  • scopus:85054326615
  • pmid:30109338
ISSN
1744-683X
DOI
10.1039/C8SM00752G
language
English
LU publication?
no
additional info
Publisher Copyright: © The Royal Society of Chemistry.
id
3aac8b0c-2ac2-40e2-8f49-8943765f13a3
date added to LUP
2023-01-18 09:10:05
date last changed
2025-02-08 20:00:34
@article{3aac8b0c-2ac2-40e2-8f49-8943765f13a3,
  abstract     = {{<p>Zwitterionic cellulose nanofibrils (ZCNFs) with an isoelectric point of 3.4 were obtained by grafting glycidyltrimethylammonium chloride onto TEMPO/NaBr/NaOCl-oxidised cellulose nanofibrils. The ZCNF aqueous dispersions were characterized via transmission electron microscopy, rheology and small angle neutron scattering, revealing a fibril-bundle structure with pronounced aggregation at pH 7. Surfactants were successfully employed to tune the stability of the ZCNF dispersions. Upon addition of the anionic surfactant, sodium dodecyl sulfate, the ZCNF dispersion shows individualized fibrils due to electrostatic stabilization. In contrast, upon addition of the cationic species dodecyltrimethylammonium bromide, the dispersion undergoes charge neutralization, leading to more pronounced flocculation.</p>}},
  author       = {{Calabrese, Vincenzo and da Silva, Marcelo A. and Schmitt, Julien and Muñoz-Garcia, Juan C. and Gabrielli, Valeria and Scott, Janet L. and Angulo, Jesus and Khimyak, Yaroslav Z. and Edler, Karen J.}},
  issn         = {{1744-683X}},
  language     = {{eng}},
  number       = {{38}},
  pages        = {{7793--7800}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{Soft Matter}},
  title        = {{Surfactant controlled zwitterionic cellulose nanofibril dispersions}},
  url          = {{http://dx.doi.org/10.1039/C8SM00752G}},
  doi          = {{10.1039/C8SM00752G}},
  volume       = {{14}},
  year         = {{2018}},
}