Stabilization of emulsions (and foams) with nanocellulose materials

Per Stenius, Tekla Tammelin, Marie Gestranius, Johan Sjöblom

Research output: Contribution to conferenceConference articleScientific

Abstract

Cellulose nanomaterials are environmentally sustainable, renewable, abundant and biodegradable. They offer an alternative to many materials based on fossil resources and, hence, research on manufacture, properties and applications of cellulose nanomaterials has developed explosively during the last decade. This lecture gives an overview of two applications of cellulose nanomaterials: the properties of cellulose nanofibrils (CNF), cellulose nanocrystals (CNC) and bacterial cellulose as stabilizers of particle stabilized emulsions (Pickering emulsions) and foams. Both CNF and CNC can be used to prepare strong, extremy lightweight solid foams. Using different methods to render the particle surfaces hydrophobic CNF and CNC can be used stabilize w/o emulsions with controlled particle size in a very wide range of sizes. In this context the fact that surface hydroxyl groups are ideal targets for chemical functionalization is one of the great advantages of CNFs and CNCs. More hydrophilic particles tend to stabilize o/w emulsions. Shape, charge and dosage of CNF or CNC as well as the nature of the oil phase and the oil/water ratio strongly affect the properties of the emulsions (stability, droplet size and size distribution, rheology etc.). The stabilizing mechanism seems to be related to the ability of the CNF or CNC to form stable films at the o/w interface and, accordingly, they primarily act as stabilizers against coalescence rather than flocculation.
Original languageEnglish
Publication statusPublished - 2015
EventCOST Action MP1106: International Symposium "Smart and Green Interfaces: Fundamentals and Diagnostics" - Sofia, Bulgaria
Duration: 29 Oct 201531 Oct 2015

Conference

ConferenceCOST Action MP1106: International Symposium "Smart and Green Interfaces: Fundamentals and Diagnostics"
Abbreviated titleSGI-FunD 2015
CountryBulgaria
CitySofia
Period29/10/1531/10/15

Fingerprint

Emulsions
Cellulose
Foams
Stabilization
Nanocrystals
Nanostructured materials
Oils
Flocculation
Coalescence
Rheology
Hydroxyl Radical
Particle size

Keywords

  • cellulose nanomaterials

Cite this

Stenius, P., Tammelin, T., Gestranius, M., & Sjöblom, J. (2015). Stabilization of emulsions (and foams) with nanocellulose materials. Paper presented at COST Action MP1106: International Symposium "Smart and Green Interfaces: Fundamentals and Diagnostics", Sofia, Bulgaria.
Stenius, Per ; Tammelin, Tekla ; Gestranius, Marie ; Sjöblom, Johan. / Stabilization of emulsions (and foams) with nanocellulose materials. Paper presented at COST Action MP1106: International Symposium "Smart and Green Interfaces: Fundamentals and Diagnostics", Sofia, Bulgaria.
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abstract = "Cellulose nanomaterials are environmentally sustainable, renewable, abundant and biodegradable. They offer an alternative to many materials based on fossil resources and, hence, research on manufacture, properties and applications of cellulose nanomaterials has developed explosively during the last decade. This lecture gives an overview of two applications of cellulose nanomaterials: the properties of cellulose nanofibrils (CNF), cellulose nanocrystals (CNC) and bacterial cellulose as stabilizers of particle stabilized emulsions (Pickering emulsions) and foams. Both CNF and CNC can be used to prepare strong, extremy lightweight solid foams. Using different methods to render the particle surfaces hydrophobic CNF and CNC can be used stabilize w/o emulsions with controlled particle size in a very wide range of sizes. In this context the fact that surface hydroxyl groups are ideal targets for chemical functionalization is one of the great advantages of CNFs and CNCs. More hydrophilic particles tend to stabilize o/w emulsions. Shape, charge and dosage of CNF or CNC as well as the nature of the oil phase and the oil/water ratio strongly affect the properties of the emulsions (stability, droplet size and size distribution, rheology etc.). The stabilizing mechanism seems to be related to the ability of the CNF or CNC to form stable films at the o/w interface and, accordingly, they primarily act as stabilizers against coalescence rather than flocculation.",
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Stenius, P, Tammelin, T, Gestranius, M & Sjöblom, J 2015, 'Stabilization of emulsions (and foams) with nanocellulose materials' Paper presented at COST Action MP1106: International Symposium "Smart and Green Interfaces: Fundamentals and Diagnostics", Sofia, Bulgaria, 29/10/15 - 31/10/15, .

Stabilization of emulsions (and foams) with nanocellulose materials. / Stenius, Per; Tammelin, Tekla; Gestranius, Marie; Sjöblom, Johan.

2015. Paper presented at COST Action MP1106: International Symposium "Smart and Green Interfaces: Fundamentals and Diagnostics", Sofia, Bulgaria.

Research output: Contribution to conferenceConference articleScientific

TY - CONF

T1 - Stabilization of emulsions (and foams) with nanocellulose materials

AU - Stenius, Per

AU - Tammelin, Tekla

AU - Gestranius, Marie

AU - Sjöblom, Johan

PY - 2015

Y1 - 2015

N2 - Cellulose nanomaterials are environmentally sustainable, renewable, abundant and biodegradable. They offer an alternative to many materials based on fossil resources and, hence, research on manufacture, properties and applications of cellulose nanomaterials has developed explosively during the last decade. This lecture gives an overview of two applications of cellulose nanomaterials: the properties of cellulose nanofibrils (CNF), cellulose nanocrystals (CNC) and bacterial cellulose as stabilizers of particle stabilized emulsions (Pickering emulsions) and foams. Both CNF and CNC can be used to prepare strong, extremy lightweight solid foams. Using different methods to render the particle surfaces hydrophobic CNF and CNC can be used stabilize w/o emulsions with controlled particle size in a very wide range of sizes. In this context the fact that surface hydroxyl groups are ideal targets for chemical functionalization is one of the great advantages of CNFs and CNCs. More hydrophilic particles tend to stabilize o/w emulsions. Shape, charge and dosage of CNF or CNC as well as the nature of the oil phase and the oil/water ratio strongly affect the properties of the emulsions (stability, droplet size and size distribution, rheology etc.). The stabilizing mechanism seems to be related to the ability of the CNF or CNC to form stable films at the o/w interface and, accordingly, they primarily act as stabilizers against coalescence rather than flocculation.

AB - Cellulose nanomaterials are environmentally sustainable, renewable, abundant and biodegradable. They offer an alternative to many materials based on fossil resources and, hence, research on manufacture, properties and applications of cellulose nanomaterials has developed explosively during the last decade. This lecture gives an overview of two applications of cellulose nanomaterials: the properties of cellulose nanofibrils (CNF), cellulose nanocrystals (CNC) and bacterial cellulose as stabilizers of particle stabilized emulsions (Pickering emulsions) and foams. Both CNF and CNC can be used to prepare strong, extremy lightweight solid foams. Using different methods to render the particle surfaces hydrophobic CNF and CNC can be used stabilize w/o emulsions with controlled particle size in a very wide range of sizes. In this context the fact that surface hydroxyl groups are ideal targets for chemical functionalization is one of the great advantages of CNFs and CNCs. More hydrophilic particles tend to stabilize o/w emulsions. Shape, charge and dosage of CNF or CNC as well as the nature of the oil phase and the oil/water ratio strongly affect the properties of the emulsions (stability, droplet size and size distribution, rheology etc.). The stabilizing mechanism seems to be related to the ability of the CNF or CNC to form stable films at the o/w interface and, accordingly, they primarily act as stabilizers against coalescence rather than flocculation.

KW - cellulose nanomaterials

M3 - Conference article

ER -

Stenius P, Tammelin T, Gestranius M, Sjöblom J. Stabilization of emulsions (and foams) with nanocellulose materials. 2015. Paper presented at COST Action MP1106: International Symposium "Smart and Green Interfaces: Fundamentals and Diagnostics", Sofia, Bulgaria.