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.
    @conference{a665d7315c404eb1a036da01e61d6483,
    title = "Stabilization of emulsions (and foams) with nanocellulose materials",
    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.",
    keywords = "cellulose nanomaterials",
    author = "Per Stenius and Tekla Tammelin and Marie Gestranius and Johan Sj{\"o}blom",
    year = "2015",
    language = "English",
    note = "COST Action MP1106: International Symposium {"}Smart and Green Interfaces: Fundamentals and Diagnostics{"}, SGI-FunD 2015 ; Conference date: 29-10-2015 Through 31-10-2015",

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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.