Synthesis of poly(styrene-dimethylsiloxane) block copolymers: Influence of the phase-separated morphologies on the thermal behaviors - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Biological Macromolecules Année : 1998

Synthesis of poly(styrene-dimethylsiloxane) block copolymers: Influence of the phase-separated morphologies on the thermal behaviors

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Résumé

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.

Dates et versions

hal-00574892 , version 1 (09-03-2011)

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Citer

David Rosati, Michel-Yves Perrin, Patrick Navard, Valeria Harabagiu, Mariana Pinteala. Synthesis of poly(styrene-dimethylsiloxane) block copolymers: Influence of the phase-separated morphologies on the thermal behaviors. International Journal of Biological Macromolecules, 1998, 31 (13), pp.Pages 4301-4308. ⟨10.1021/ma971577c⟩. ⟨hal-00574892⟩
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