Multifractal analysis. A new method for the characterization of the morphology of multicomponent polymer systems |
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Authors: | S Blacher F Brouers R Fayt P Teyssi |
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Institution: | S. Blacher,F. Brouers,R. Fayt,P. Teyssié |
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Abstract: | It has been demonstrated that use of polymeric emulsifiers under usual processing conditions in the melt state is a powerful technique for preparing polymer alloys. Digitized representation of optical micrographs of thin sections of blends of a low-density polyethylene and polystyrene (20 wt % PE-80 wt % PS) containing 2 and 5 wt % of two hydrogenated polybutadiene-polystyrene block copolymers exhibit different degrees of homogeneity as well as different morphological structures which can be studied by a multifractal analysis. We show how these differences are reflected in the f(α) spectrum of singularities which can be obtained by a box counting method in the canonical approximation. We have found a correlation between the f(α) curves and the mechanical properties of the corresponding samples: the samples which area the less multifractals have the best mechanical properties. © 1993 John Wiley & Sons, Inc. |
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Keywords: | multifractal analysis of morphology of multicomponent polymer systems |
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