Coalescence in quiescent polymer blends with a high content of the dispersed phase

Result code in IS VaVaI

RIV/61389013:_____/12:00377756 - isvavai.cz

Result on the web

http://dx.doi.org/10.1016/j.eurpolymj.2012.04.017

DOI - Digital Object Identifier

10.1016/j.eurpolymj.2012.04.017

Result language

angličtina

Original language name

Coalescence in quiescent polymer blends with a high content of the dispersed phase

Original language description

Coalescence in molten quiescent polymer blends induced by van der Waals forces is studied theoretically. Interaction between a droplet and its nearest neighbor keeping spherical shape during drainage of the matrix trapped between them is considered. It is assumed that droplets having a time dependent radius R are randomly distributed in the blend through the whole course of the coalescence. Various approaches to calculation of the average time of coalescence, tc are compared. Calculated dependence of Ron the time of coalescence, t, is compared with experimental results for polypropylene/ethylene?propylene rubber (PP/EPR) blends. Experimental results show decreasing slope of R3 vs. t dependence, especially for a higher content of dispersed EPR. Theories using average h0 or direct averaging of tc predict somewhat smaller rate of coalescence than that experimentally determined for PP/EPR blends. Reasons of these differences are discussed

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BJ - Thermodynamics

OECD FORD branch

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Project

IAA200500903: The effects of coalescence and crystallization on the phase structure evolution at cooling of polymer blends

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

European Polymer Journal

ISSN

0014-3057

e-ISSN

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Volume of the periodical

48

Issue of the periodical within the volume

7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

1230-1240

UT code for WoS article

000306681200010

EID of the result in the Scopus database

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