Preparation and Characterization of Silicone Liquid Core/Polymer Shell Microcapsules via Internal Phase Separation

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  • Lidia González
    Department of Chemical and Biochemical Engineering Danish Polymer Centre DTU, Søltofts Plads 227, DK‐2800 Kgs Lyngby Denmark
  • Malgorzata Kostrzewska
    Department of Chemical and Biochemical Engineering Danish Polymer Centre DTU, Søltofts Plads 227, DK‐2800 Kgs Lyngby Denmark
  • Ma Baoguang
    Department of Chemical and Biochemical Engineering Danish Polymer Centre DTU, Søltofts Plads 227, DK‐2800 Kgs Lyngby Denmark
  • Li Li
    Department of Chemical and Biochemical Engineering Danish Polymer Centre DTU, Søltofts Plads 227, DK‐2800 Kgs Lyngby Denmark
  • Jens Henrik Hansen
    Maersk Oil Research and Technology Centre Education City P.O. Box 210112 Doha Qatar
  • Søren Hvilsted
    Department of Chemical and Biochemical Engineering Danish Polymer Centre DTU, Søltofts Plads 227, DK‐2800 Kgs Lyngby Denmark
  • Anne Ladegaard Skov
    Department of Chemical and Biochemical Engineering Danish Polymer Centre DTU, Søltofts Plads 227, DK‐2800 Kgs Lyngby Denmark

説明

<jats:sec><jats:label /><jats:p>Microcapsules with a silicone liquid core surrounded by a polymeric shell were synthesised through the controlled phase separation. The dispersed silicone phase consisted of the shell polymer PMMA, a good solvent for the PMMA (dichloromethane, DCM) and a poor solvent (methylhydrosiloxane dimethylsiloxane) for the PMMA. The morphology of the PMMA microcapsules was investigated by ATR‐FTIR and by optical microscopy. Microcapsules were prepared with different emulsifiers and different concentrations of acetone and PMMA in the oil phase. The thermal stability of the PMMA microcapsule and the content of the silicone oil core were assessed by TGA. <jats:sup>1</jats:sup>H‐NMR spectroscopy and an extraction method were also used to determine the content of the silicone liquid core in the microcapsules.<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="graphic/mame201400020-gra-0001.png" xlink:title="mame201400020-gra-0001" /></jats:p></jats:sec>

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