Non-uniform phase structure in immiscible polymer blends - reasons and consequences

I. Fortelný; M. Lapčíková; F. Lednický; Z. Starý; Z. Kruliš

Published : 2009-02-12

Vol. 54 No. 2 (2009)

Non-uniform phase structure in immiscible polymer blends - reasons and consequences

I. Fortelný M. Lapčíková F. Lednický Z. Starý Z. Kruliš

Abstract

Uniformity of the phase structure in binary and ternary polystyrene, polyamide and polyethylene blends was studied. It was found that areas containing particles with strongly different average size coexisted in quenched and compression molded samples of all blends under study. It was shown that neglecting of this effect could cause erroneous determination of the particle size dependence on the mixing conditions and properties of the blend components. An analysis of the competition between the droplet break-up and coalescence showed that non-uniformity of the phase structure was apparently caused by non-uniform flow field in a mixing device.

Keywords

mieszanki polimerów ; niejednorodna struktura fazowa ; uśrednione rozmiary cząstek polymer blends ; non-uniform phase structure ; averaging particle size

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Fortelný, I., Lapčíková, M., Lednický, F., Starý, Z., & Kruliš, Z. (2009). Non-uniform phase structure in immiscible polymer blends - reasons and consequences. Polimery, 54(2), 139–144. Retrieved from https://polimery.ichp.vot.pl/index.php/p/article/view/1186

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I. Fortelný fortelny@imc.cas.cz

Affiliation
Czech Academy of Science, Institute of Macromolecular Chemistry, 162 06 Prague, Heyrovského Námesti 2

M. Lapčíková

F. Lednický

Z. Starý

Z. Kruliš