Swelling of polyethylene particles and its relation to sorption equilibria under gas-phase polymerization conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F17%3A43914179" target="_blank" >RIV/60461373:22340/17:43914179 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/app.45035" target="_blank" >http://dx.doi.org/10.1002/app.45035</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/app.45035" target="_blank" >10.1002/app.45035</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Swelling of polyethylene particles and its relation to sorption equilibria under gas-phase polymerization conditions

Popis výsledku v původním jazyce

The attempts to predict the swelling of semicrystalline polyolefins using equations of state have not been successful so far and the few conducted experimental investigations have been limited to a narrow range of samples and conditions. This article presents a systematic video-microscopic study of the swelling induced in various grades of PE particles by the sorption of ethylene and co-monomers (propylene, 1-hexene) at condition relevant to gas-phase polymerization. Based on experimental data for various PE densities, the swelling factor H was evaluated, which enables the prediction of PE swelling by ethylene. The swelling data were compared with the corresponding gravimetrically measured sorption isotherms. In the case of ethylene and propylene sorption, the swelling significantly influences the evaluation of sorption isotherms. Conversely, the effect of swelling was negligible for higher hydrocarbons. The observed impact of swelling on the sorption is discussed based on the evaluated partial molar volumes of penetrants. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45035.

Název v anglickém jazyce

Swelling of polyethylene particles and its relation to sorption equilibria under gas-phase polymerization conditions

Popis výsledku anglicky

The attempts to predict the swelling of semicrystalline polyolefins using equations of state have not been successful so far and the few conducted experimental investigations have been limited to a narrow range of samples and conditions. This article presents a systematic video-microscopic study of the swelling induced in various grades of PE particles by the sorption of ethylene and co-monomers (propylene, 1-hexene) at condition relevant to gas-phase polymerization. Based on experimental data for various PE densities, the swelling factor H was evaluated, which enables the prediction of PE swelling by ethylene. The swelling data were compared with the corresponding gravimetrically measured sorption isotherms. In the case of ethylene and propylene sorption, the swelling significantly influences the evaluation of sorption isotherms. Conversely, the effect of swelling was negligible for higher hydrocarbons. The observed impact of swelling on the sorption is discussed based on the evaluated partial molar volumes of penetrants. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45035.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

<a href="/cs/project/GA16-07898S" target="_blank" >GA16-07898S: Aglomerace částic polyolefinů studovaná na meso-měřítku</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Applied Polymer Science

ISSN

0021-8995

e-ISSN

—

Svazek periodika

134

Číslo periodika v rámci svazku

27

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

000399653100020

EID výsledku v databázi Scopus

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