Surfactant controlled zwitterionic cellulose nanofibril dispersions

Vincenzo Calabrese; Marcelo A. da Silva; Julien Schmitt; Juan C. Muñoz-Garcia; Valeria Gabrielli; Janet L. Scott; Jesus Angulo; Yaroslav Z. Khimyak; Karen J. Edler

doi:10.1039/C8SM00752G

Surfactant controlled zwitterionic cellulose nanofibril dispersions

Vincenzo Calabrese, Marcelo A. da Silva, Julien Schmitt, Juan C. Muñoz-Garcia, Valeria Gabrielli, Janet L. Scott, Jesus Angulo, Yaroslav Z. Khimyak, Karen J. Edler

Pharmaceutical Materials and Soft Matter

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

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Abstract

Zwitterionic cellulose nanofibrils (ZCNF) with isoelectric point of 3.4 were obtained by grafting glycidyltrimethylammonium chloride onto TEMPO/NaBr/NaOCl-oxidised cellulose nanofibrils. 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. On the contrary, upon addition of the cationic species dodecyltrimethylammonium bromide, the dispersion undergoes charge neutralization, leading to more pronounced flocculation.

Original language	English
Pages (from-to)	7793-7800
Number of pages	8
Journal	Soft Matter
Volume	14
Issue number	38
Early online date	1 Aug 2018
DOIs	https://doi.org/10.1039/C8SM00752G
Publication status	Published - 14 Oct 2018

Keywords

cellulose nanofibrils
NMR
soft matter

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10.1039/C8SM00752GLicence: CC BY

Accepted_manuscriptAccepted author manuscript, 1.57 MBLicence: CC BY

Jesus Angulo
- J.Angulouea.acuk
- School of Chemistry, Pharmacy and Pharmacology - Honorary Senior Lecturer
- Pharmaceutical Materials and Soft Matter - Member
Person: Honorary, Research Group Member
Yaroslav Khimyak
- Y.Khimyakuea.acuk
- School of Chemistry, Pharmacy and Pharmacology - Professor in Solid-state NMR
- Pharmaceutical Materials and Soft Matter - Member
Person: Research Group Member, Academic, Teaching & Research

New Enzymatically Produced Interpenetrating Starch-Cellulose Gels
Khimyak, Y., Angulo, J. & Macdonald, C.
Engineering and Physical Sciences Research Council
1/09/16 → 30/11/20
Project: Research

Data for: Surfactant controlled zwitterionic cellulose nanofibril dispersions
Munoz Garcia, J. (Creator), Khimyak, Y. (Creator), Gabrielli, V. (Creator) & Angulo, J. (Creator), University of East Anglia, 7 Aug 2018
DOI: 10.1039/C8SM00752G
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Cite this

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title = "Surfactant controlled zwitterionic cellulose nanofibril dispersions",

abstract = "Zwitterionic cellulose nanofibrils (ZCNF) with isoelectric point of 3.4 were obtained by grafting glycidyltrimethylammonium chloride onto TEMPO/NaBr/NaOCl-oxidised cellulose nanofibrils. 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. On the contrary, upon addition of the cationic species dodecyltrimethylammonium bromide, the dispersion undergoes charge neutralization, leading to more pronounced flocculation.",

keywords = "cellulose nanofibrils, NMR, soft matter",

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year = "2018",

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doi = "10.1039/C8SM00752G",

language = "English",

volume = "14",

pages = "7793--7800",

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T1 - Surfactant controlled zwitterionic cellulose nanofibril dispersions

AU - Calabrese, Vincenzo

AU - da Silva, Marcelo A.

AU - Schmitt, Julien

AU - Muñoz-Garcia, Juan C.

AU - Gabrielli, Valeria

AU - Scott, Janet L.

AU - Angulo, Jesus

AU - Khimyak, Yaroslav Z.

AU - Edler, Karen J.

PY - 2018/10/14

Y1 - 2018/10/14

N2 - Zwitterionic cellulose nanofibrils (ZCNF) with isoelectric point of 3.4 were obtained by grafting glycidyltrimethylammonium chloride onto TEMPO/NaBr/NaOCl-oxidised cellulose nanofibrils. 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. On the contrary, upon addition of the cationic species dodecyltrimethylammonium bromide, the dispersion undergoes charge neutralization, leading to more pronounced flocculation.

AB - Zwitterionic cellulose nanofibrils (ZCNF) with isoelectric point of 3.4 were obtained by grafting glycidyltrimethylammonium chloride onto TEMPO/NaBr/NaOCl-oxidised cellulose nanofibrils. 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. On the contrary, upon addition of the cationic species dodecyltrimethylammonium bromide, the dispersion undergoes charge neutralization, leading to more pronounced flocculation.

KW - cellulose nanofibrils

KW - NMR

KW - soft matter

U2 - 10.1039/C8SM00752G

DO - 10.1039/C8SM00752G

M3 - Article

VL - 14

SP - 7793

EP - 7800

JO - Soft Matter

JF - Soft Matter

SN - 1744-683X

IS - 38

ER -

Surfactant controlled zwitterionic cellulose nanofibril dispersions

Abstract

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Profiles

Jesus Angulo

Yaroslav Khimyak

Projects

New Enzymatically Produced Interpenetrating Starch-Cellulose Gels

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Data for: Surfactant controlled zwitterionic cellulose nanofibril dispersions

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