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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Equilibrium sorption of ethylene in polyethylene: Experimental study and PC-SAFT simulations
Original language description
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
Czech name
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Czech description
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Type
J<sub>x</sub> - 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
<a href="/en/project/GAP106%2F10%2F1912" target="_blank" >GAP106/10/1912: Morphology-dependent sorption and diffusion of penetrants in polymers</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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