Salt responsive Pickering emulsions stabilized by functionalized cellulose nanofibrils

James Courtenay; Yun Jin; Julien Schmitt; Zakir Hossain; Najet Mahmoudi; Janet L Scott; Karen Edler

doi:10.1021/acs.langmuir.0c03306

Salt responsive Pickering emulsions stabilized by functionalized cellulose nanofibrils

James Courtenay, Yun Jin, Julien Schmitt, Zakir Hossain, Najet Mahmoudi, Janet L Scott, Karen Edler

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

21 Citations (SciVal)

Abstract

Oil in water emulsions have been stabilized by functionalized cellulose nanofibrils, bearing either negative (oxidized cellulose nanofibrils, OCNF), or positive (cationic cellulose nanofibrils, CCNF) surface charge. The size of the droplets was measured by laser diffraction, while the structure of the shell of the Pickering emulsion droplets was probed using small angle neutron scattering (SANS), confocal laser scanning microscopy (CLSM), scanning electron microscopy (SEM) and rheology measurements. Both OCNF and CCNF-stabilized emulsions present a very thick shell (>100 nm), comprised of densely packed CNF. OCNF stabilized emulsions proved to be salt responsive, influencing the droplet aggregation and ultimately the gel properties of the emulsions; while CCNF emulsions, on the other hand, showed very little salt-dependent behavior.

Original language	English
Pages (from-to)	6864–6873
Journal	Langmuir
Volume	37
Issue number	23
Early online date	3 Jun 2021
DOIs	https://doi.org/10.1021/acs.langmuir.0c03306
Publication status	Published - 15 Jun 2021

Funding

The authors thank the EPSRC for funding this project (grant EP/N033310/1). We acknowledge ISIS for the provision of beamtime for the SANS experiments, and Dr. Ann Terry is thanked for her assistance with the first SANS experiment on Sans2d at the ISIS Neutron and Muon Source (experiment nos. RB1410091 and RB1710159). Dr. Ursula Potter is thanked for assistance in the acquisition of the TEM and SEM images and Anne Gesell for assistance in CLSM imaging. J.C.C. acknowledges funding from the EPSRC Centre for Doctoral Training in Sustainable Chemical Technology (EP/L016354/1).

Access to Document

10.1021/acs.langmuir.0c03306Licence: CC BY

Embargoed Document

Draft_emulsion_paper_ACS_vfinal.PDF
Accepted author manuscript, 1.23 MB
Licence: Unspecified
Embargo ends: 31/12/99
Request copy

New Enzymatically Produced Interpenetrating Starch-Cellulose Gels
Edler, K. (PI) & Scott, J. L. (CoI)
Engineering and Physical Sciences Research Council
6/06/16 → 31/01/21
Project: Research council

Dataset for "Salt-Responsive Pickering Emulsions Stabilized by Functionalized Cellulose Nanofibrils"
Courtenay, J. C. (Creator), Jin, Y. (Creator), Schmitt, J. (Creator), Hossain, K. M. Z. (Creator), Mahmoudi, N. (Creator), Edler, K. (Creator) & Scott, J. L. (Creator), University of Bath, 3 Jun 2021
DOI: 10.15125/BATH-01013
Dataset

Confocal Laser Scanning Microscope Zeiss LSM-880 with Airyscan and multiphoton laser
Material and Chemical Characterisation (MC2)
Facility/equipment: Equipment
Mastersizer
Department of Chemical Engineering
Facility/equipment: Equipment

Cite this

@article{40249013e3234a4a8efff4bee228c3c3,

title = "Salt responsive Pickering emulsions stabilized by functionalized cellulose nanofibrils",

abstract = "Oil in water emulsions have been stabilized by functionalized cellulose nanofibrils, bearing either negative (oxidized cellulose nanofibrils, OCNF), or positive (cationic cellulose nanofibrils, CCNF) surface charge. The size of the droplets was measured by laser diffraction, while the structure of the shell of the Pickering emulsion droplets was probed using small angle neutron scattering (SANS), confocal laser scanning microscopy (CLSM), scanning electron microscopy (SEM) and rheology measurements. Both OCNF and CCNF-stabilized emulsions present a very thick shell (>100 nm), comprised of densely packed CNF. OCNF stabilized emulsions proved to be salt responsive, influencing the droplet aggregation and ultimately the gel properties of the emulsions; while CCNF emulsions, on the other hand, showed very little salt-dependent behavior.",

author = "James Courtenay and Yun Jin and Julien Schmitt and Zakir Hossain and Najet Mahmoudi and Scott, {Janet L} and Karen Edler",

year = "2021",

month = jun,

day = "15",

doi = "10.1021/acs.langmuir.0c03306",

language = "English",

volume = "37",

pages = "6864–6873",

journal = "Langmuir ",

issn = "0743-7463",

publisher = "American Chemical Society",

number = "23",

}

TY - JOUR

T1 - Salt responsive Pickering emulsions stabilized by functionalized cellulose nanofibrils

AU - Courtenay, James

AU - Jin, Yun

AU - Schmitt, Julien

AU - Hossain, Zakir

AU - Mahmoudi, Najet

AU - Scott, Janet L

AU - Edler, Karen

PY - 2021/6/15

Y1 - 2021/6/15

N2 - Oil in water emulsions have been stabilized by functionalized cellulose nanofibrils, bearing either negative (oxidized cellulose nanofibrils, OCNF), or positive (cationic cellulose nanofibrils, CCNF) surface charge. The size of the droplets was measured by laser diffraction, while the structure of the shell of the Pickering emulsion droplets was probed using small angle neutron scattering (SANS), confocal laser scanning microscopy (CLSM), scanning electron microscopy (SEM) and rheology measurements. Both OCNF and CCNF-stabilized emulsions present a very thick shell (>100 nm), comprised of densely packed CNF. OCNF stabilized emulsions proved to be salt responsive, influencing the droplet aggregation and ultimately the gel properties of the emulsions; while CCNF emulsions, on the other hand, showed very little salt-dependent behavior.

AB - Oil in water emulsions have been stabilized by functionalized cellulose nanofibrils, bearing either negative (oxidized cellulose nanofibrils, OCNF), or positive (cationic cellulose nanofibrils, CCNF) surface charge. The size of the droplets was measured by laser diffraction, while the structure of the shell of the Pickering emulsion droplets was probed using small angle neutron scattering (SANS), confocal laser scanning microscopy (CLSM), scanning electron microscopy (SEM) and rheology measurements. Both OCNF and CCNF-stabilized emulsions present a very thick shell (>100 nm), comprised of densely packed CNF. OCNF stabilized emulsions proved to be salt responsive, influencing the droplet aggregation and ultimately the gel properties of the emulsions; while CCNF emulsions, on the other hand, showed very little salt-dependent behavior.

U2 - 10.1021/acs.langmuir.0c03306

DO - 10.1021/acs.langmuir.0c03306

M3 - Article

SN - 0743-7463

VL - 37

SP - 6864

EP - 6873

JO - Langmuir

JF - Langmuir

IS - 23

ER -

Salt responsive Pickering emulsions stabilized by functionalized cellulose nanofibrils

Abstract

Funding

Access to Document

Embargoed Document

Fingerprint

Projects

New Enzymatically Produced Interpenetrating Starch-Cellulose Gels

Datasets

Dataset for "Salt-Responsive Pickering Emulsions Stabilized by Functionalized Cellulose Nanofibrils"

Equipment

Confocal Laser Scanning Microscope Zeiss LSM-880 with Airyscan and multiphoton laser

Mastersizer

Cite this