Investigation of phase separation mechanisms of thermoset polymer blends by time-resolved SAXS |
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Authors: | N Boyard C Sinturel R Erre |
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Institution: | a Centre de Recherche sur la Matière Divisée, 1 B rue de la Férollerie, 45071 Orleans Cedex 02, France b Chemistry Division, Argonne National Laboratory, Argonne, IL 60439, USA |
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Abstract: | Phase separation induced by crosslinking was studied by time-resolved small angle X-ray scattering in thermoset blend based on unsaturated polyester, styrene and low molar weight saturated polyester as low profile additive. The scattering intensities were analyzed using the Cahn-Hilliard-Cook theory. Combining DSC and DMA experiments allowed us to conclude that phase separation proceeded via spinodal decomposition frozen in the early stage. Apparent diffusion coefficients Dapp were estimated. |
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Keywords: | Phase separation Unsaturated polyester resin Low profile additive Spinodal decomposition Small angle X-ray scattering |
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