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Synthesis of poly(styrene-dimethylsiloxane) block copolymers: Influence of the phase-separated morphologies on the thermal behaviors
Abstract : Five polystyrene-poly(dimethylsiloxane) di- and triblock copolymers were prepared by two different methods, a classical anionic polymerization and a cationic polymerization of styrene in the presence of a new macromolecular initiator. Spherical, cylindrical, and lamellar phase-separated morphologies were identified. Their sizes were measured by transmission electron microscopy (TEM) on films obtained from bulk and solvent-cast samples. DSC and TEM show that the phase-separated morphologies are strongly segregated with no long range ordering. The specific microphase surface area, obtained by TEM, is strongly correlated with the broadening of the polystyrene glass transition.
https://hal-mines-paristech.archives-ouvertes.fr/hal-00574892
Contributeur : Magalie Prudon <>
Soumis le : mercredi 9 mars 2011 - 09:40:12
Dernière modification le : jeudi 24 septembre 2020 - 17:22:55
Contributeur : Magalie Prudon <>
Soumis le : mercredi 9 mars 2011 - 09:40:12
Dernière modification le : jeudi 24 septembre 2020 - 17:22:55
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