Softening of polyethylene powders at reactor conditions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F13%3A43895660" target="_blank" >RIV/60461373:22340/13:43895660 - isvavai.cz</a>

Alternative codes found

RIV/49777513:23640/13:43919678

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S138589471300689X" target="_blank" >http://www.sciencedirect.com/science/article/pii/S138589471300689X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cej.2013.05.069" target="_blank" >10.1016/j.cej.2013.05.069</a>

Result language

angličtina

Original language name

Softening of polyethylene powders at reactor conditions

Original language description

Polymer softening is a major problem in industrial gas phase polymerizations, because it enhances particle agglomeration and reactor wall fouling. It is thus desirable to investigate this phenomenon and identify safe operating conditions. We developed anew experimental method for the characterization of polyolefin softening and proposed a theory qualitatively correlating this phenomenon with the Young modulus. The developed laser dilatometry technique is based on the measurement of polyolefin powder deformations under a constant load at elevated temperatures. Our method enables to measure the softening of polyolefin powders in air and in hydrocarbon gases/vapors, which means that polyolefin softening can be studied at industrially relevant conditions.In the experimental part, we present results obtained for a broad set of polyethylene samples in various atmospheres. The results are in very good agreement with our theoretical expectations and thus verify the proposed effects of polyme

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

CI - Industrial chemistry and chemical engineering

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2013

Confidentiality

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

Name of the periodical

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

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Volume of the periodical

228

Issue of the periodical within the volume

červen 2013

Country of publishing house

CH - SWITZERLAND

Number of pages

10

Pages from-to

907-916

UT code for WoS article

000326203500099

EID of the result in the Scopus database

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