The Hayashi-nishi Method for Measurement of Mixing:Computer-Generated Morphologies and Impact-Modified Polymers

In this work we apply the Hayashi-Nishi method for quantitatively analyzing the state of mixing of a secondary component in a polymeric matrix. We (1) evaluate the method using computer-generated morphologies and (2) compare the state of mixing of a core-shell impact modifier in polymers having diff...

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Bibliographic Details
Published in:Microscopy and microanalysis 1998-07, Vol.4 (S2), p.830-831
Main Authors: Tant, M. R., Calvert, D. B., Wehner, P. S.
Format: Article
Language:English
Subjects:
Developments in Measuring Polymer Microstructures
Impact modifiers
Morphology
Particle size distribution
Polymers
Size distribution
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Summary:In this work we apply the Hayashi-Nishi method for quantitatively analyzing the state of mixing of a secondary component in a polymeric matrix. We (1) evaluate the method using computer-generated morphologies and (2) compare the state of mixing of a core-shell impact modifier in polymers having differing affinity for the impact modifier. In the Hayashi-Nishi method two numbers, related to dispersion and distribution, are required to quantify the state of mixing of a secondary phase in a polymeric matrix. The 5-parameter in the Hayashi-Nishi method is defined as The Ai's are the areas of each individual secondary phase particle or aggregate and nis the number of such particles in the image. S is related to the size distribution of these aggregate areas and is a measure of dispersion of the secondary phase in that particular image.
ISSN:1431-9276
1435-8115
DOI:10.1017/S1431927600024272