Equilibrium sorption of ethylene in polyethylene: Experimental study and PC-SAFT simulations

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F15%3A43900606" target="_blank" >RIV/60461373:22340/15:43900606 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0032386115000518" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0032386115000518</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymer.2015.01.012" target="_blank" >10.1016/j.polymer.2015.01.012</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Equilibrium sorption of ethylene in polyethylene: Experimental study and PC-SAFT simulations

Popis výsledku v původním jazyce

Ethylene sorption in polyethylene (PE) influences the reaction rate in polymerization reactors and the subsequent degassing of residual monomer. The knowledge of ethylene solubilities is therefore important for process design and optimization. We used agravimetric apparatus based on a magnetic suspension balance to measure ethylene solubilities in 13 PE samples at temperatures from 60 to 150 oC. The samples were nascent reactor powders with densities from 902 to 967 kg mMINUS SIGN 3 and weight averagemolecular weights from 98 to 253 kg molMINUS SIGN 1. The experimental data were compared with the literature and the entire data set was correlated using the PC-SAFT equation of state. To evaluate the solubilities, we used swelling corrections based on experimental data and considered temperature dependent crystallinities. As a result, the ethylene solubilities decreased with increasing temperature and increasing PE crystallinity. Furthermore, we observed a temperature independent PC-SAF

Název v anglickém jazyce

Equilibrium sorption of ethylene in polyethylene: Experimental study and PC-SAFT simulations

Popis výsledku anglicky

Ethylene sorption in polyethylene (PE) influences the reaction rate in polymerization reactors and the subsequent degassing of residual monomer. The knowledge of ethylene solubilities is therefore important for process design and optimization. We used agravimetric apparatus based on a magnetic suspension balance to measure ethylene solubilities in 13 PE samples at temperatures from 60 to 150 oC. The samples were nascent reactor powders with densities from 902 to 967 kg mMINUS SIGN 3 and weight averagemolecular weights from 98 to 253 kg molMINUS SIGN 1. The experimental data were compared with the literature and the entire data set was correlated using the PC-SAFT equation of state. To evaluate the solubilities, we used swelling corrections based on experimental data and considered temperature dependent crystallinities. As a result, the ethylene solubilities decreased with increasing temperature and increasing PE crystallinity. Furthermore, we observed a temperature independent PC-SAF

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GAP106%2F10%2F1912" target="_blank" >GAP106/10/1912: Morfologií ovlivněná sorpce a difuze penetrantů v polymerech</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Polymer

ISSN

0032-3861

e-ISSN

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Svazek periodika

59

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

270-277

Kód UT WoS článku

000350618000031

EID výsledku v databázi Scopus

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