Stability of Water/Poly(ethylene oxide)43-b-poly(ε-caprolactone)14/Cyclohexanone Emulsions Involves Water Exchange between the Core and the Bulk

Mario E. Flores, Francisco Martínez, Andrés F. Olea, Toshimichi Shibue, Natsuhiko Sugimura, Hiroyuki Nishide, Ignacio Moreno-Villoslada

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    The formation of emulsions upon reverse self-association of the monodisperse amphiphilic block copolymer poly(ethylene oxide)43-b-poly(ε-caprolactone)14 in cyclohexanone is reported. Such emulsions are not formed in toluene, chloroform, or dichloromethane. We demonstrate by magnetic resonance spectroscopy the active role of the solvent on the stabilization of the emulsions. Cyclohexanone shows high affinity for both blocks, as predicted by the Hansen solubility parameters, so that the copolymer chains are fully dissolved as monomeric chains. In addition, the solvent is able to produce hydrogen bonding with water molecules. Water undergoes molecular exchange between water molecules associated with the polymer and water molecules associated with the solvent, dynamics of major importance for the stabilization of the emulsions. Association of polymeric chains forming reverse aggregates is induced by water over a concentration threshold of 5 wt %. Reverse copolymer aggregates show submicron average hydrodynamic diameters, as seen by dynamic light scattering, depending on the polymer and water concentration.

    Original languageEnglish
    Pages (from-to)15929-15937
    Number of pages9
    JournalJournal of Physical Chemistry B
    Volume119
    Issue number52
    DOIs
    Publication statusPublished - 2015 Dec 31

    Fingerprint

    ethylene oxide
    Polyethylene oxides
    Emulsions
    emulsions
    Water
    water
    Molecules
    copolymers
    Polymers
    Copolymers
    Stabilization
    stabilization
    Magnetic resonance spectroscopy
    molecules
    Methylene Chloride
    Dichloromethane
    magnetic resonance spectroscopy
    polymers
    Toluene
    Dynamic light scattering

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Materials Chemistry
    • Surfaces, Coatings and Films

    Cite this

    Stability of Water/Poly(ethylene oxide)43-b-poly(ε-caprolactone)14/Cyclohexanone Emulsions Involves Water Exchange between the Core and the Bulk. / Flores, Mario E.; Martínez, Francisco; Olea, Andrés F.; Shibue, Toshimichi; Sugimura, Natsuhiko; Nishide, Hiroyuki; Moreno-Villoslada, Ignacio.

    In: Journal of Physical Chemistry B, Vol. 119, No. 52, 31.12.2015, p. 15929-15937.

    Research output: Contribution to journalArticle

    Flores, Mario E. ; Martínez, Francisco ; Olea, Andrés F. ; Shibue, Toshimichi ; Sugimura, Natsuhiko ; Nishide, Hiroyuki ; Moreno-Villoslada, Ignacio. / Stability of Water/Poly(ethylene oxide)43-b-poly(ε-caprolactone)14/Cyclohexanone Emulsions Involves Water Exchange between the Core and the Bulk. In: Journal of Physical Chemistry B. 2015 ; Vol. 119, No. 52. pp. 15929-15937.
    @article{5835156f8e154aeabce53c90321ec3d4,
    title = "Stability of Water/Poly(ethylene oxide)43-b-poly(ε-caprolactone)14/Cyclohexanone Emulsions Involves Water Exchange between the Core and the Bulk",
    abstract = "The formation of emulsions upon reverse self-association of the monodisperse amphiphilic block copolymer poly(ethylene oxide)43-b-poly(ε-caprolactone)14 in cyclohexanone is reported. Such emulsions are not formed in toluene, chloroform, or dichloromethane. We demonstrate by magnetic resonance spectroscopy the active role of the solvent on the stabilization of the emulsions. Cyclohexanone shows high affinity for both blocks, as predicted by the Hansen solubility parameters, so that the copolymer chains are fully dissolved as monomeric chains. In addition, the solvent is able to produce hydrogen bonding with water molecules. Water undergoes molecular exchange between water molecules associated with the polymer and water molecules associated with the solvent, dynamics of major importance for the stabilization of the emulsions. Association of polymeric chains forming reverse aggregates is induced by water over a concentration threshold of 5 wt {\%}. Reverse copolymer aggregates show submicron average hydrodynamic diameters, as seen by dynamic light scattering, depending on the polymer and water concentration.",
    author = "Flores, {Mario E.} and Francisco Mart{\'i}nez and Olea, {Andr{\'e}s F.} and Toshimichi Shibue and Natsuhiko Sugimura and Hiroyuki Nishide and Ignacio Moreno-Villoslada",
    year = "2015",
    month = "12",
    day = "31",
    doi = "10.1021/acs.jpcb.5b10274",
    language = "English",
    volume = "119",
    pages = "15929--15937",
    journal = "Journal of Physical Chemistry B Materials",
    issn = "1520-6106",
    publisher = "American Chemical Society",
    number = "52",

    }

    TY - JOUR

    T1 - Stability of Water/Poly(ethylene oxide)43-b-poly(ε-caprolactone)14/Cyclohexanone Emulsions Involves Water Exchange between the Core and the Bulk

    AU - Flores, Mario E.

    AU - Martínez, Francisco

    AU - Olea, Andrés F.

    AU - Shibue, Toshimichi

    AU - Sugimura, Natsuhiko

    AU - Nishide, Hiroyuki

    AU - Moreno-Villoslada, Ignacio

    PY - 2015/12/31

    Y1 - 2015/12/31

    N2 - The formation of emulsions upon reverse self-association of the monodisperse amphiphilic block copolymer poly(ethylene oxide)43-b-poly(ε-caprolactone)14 in cyclohexanone is reported. Such emulsions are not formed in toluene, chloroform, or dichloromethane. We demonstrate by magnetic resonance spectroscopy the active role of the solvent on the stabilization of the emulsions. Cyclohexanone shows high affinity for both blocks, as predicted by the Hansen solubility parameters, so that the copolymer chains are fully dissolved as monomeric chains. In addition, the solvent is able to produce hydrogen bonding with water molecules. Water undergoes molecular exchange between water molecules associated with the polymer and water molecules associated with the solvent, dynamics of major importance for the stabilization of the emulsions. Association of polymeric chains forming reverse aggregates is induced by water over a concentration threshold of 5 wt %. Reverse copolymer aggregates show submicron average hydrodynamic diameters, as seen by dynamic light scattering, depending on the polymer and water concentration.

    AB - The formation of emulsions upon reverse self-association of the monodisperse amphiphilic block copolymer poly(ethylene oxide)43-b-poly(ε-caprolactone)14 in cyclohexanone is reported. Such emulsions are not formed in toluene, chloroform, or dichloromethane. We demonstrate by magnetic resonance spectroscopy the active role of the solvent on the stabilization of the emulsions. Cyclohexanone shows high affinity for both blocks, as predicted by the Hansen solubility parameters, so that the copolymer chains are fully dissolved as monomeric chains. In addition, the solvent is able to produce hydrogen bonding with water molecules. Water undergoes molecular exchange between water molecules associated with the polymer and water molecules associated with the solvent, dynamics of major importance for the stabilization of the emulsions. Association of polymeric chains forming reverse aggregates is induced by water over a concentration threshold of 5 wt %. Reverse copolymer aggregates show submicron average hydrodynamic diameters, as seen by dynamic light scattering, depending on the polymer and water concentration.

    UR - http://www.scopus.com/inward/record.url?scp=84952928505&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84952928505&partnerID=8YFLogxK

    U2 - 10.1021/acs.jpcb.5b10274

    DO - 10.1021/acs.jpcb.5b10274

    M3 - Article

    AN - SCOPUS:84952928505

    VL - 119

    SP - 15929

    EP - 15937

    JO - Journal of Physical Chemistry B Materials

    JF - Journal of Physical Chemistry B Materials

    SN - 1520-6106

    IS - 52

    ER -