A polarized light scattering approach for dispersed phase morphology characterization in simulated polymer blends |
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Authors: | C. B langer,P. Cielo,W. I. Patterson,B. D. Favis,L. A. Utracki |
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Affiliation: | C. Bélanger,P. Cielo,W. I. Patterson,B. D. Favis,L. A. Utracki |
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Abstract: | A light scattering technique using a normal-incidence polarized light beam for the characterization of skin/core simulated polymer blend samples is described. The patterns of reflected, polarized scattered light from an inhomogeneous blend were captured using a video camera. The blend was illuminated from a focused laser source. The simulated samples were constructed by incorporating glass fibers (skin) and glass microspheres (core) in a polymer matrix. Asymmetrical patterns were obtained. They reflect the anisotropic nature of the near-surface morphology. Moreover, the change of the anisotropy ratio of the iso-intensity curves plotted, as a function of distance from the position of the incident laser beam on the sample, gives information about the skin and the core content as well as the skin thickness. |
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