Vitrification Conditions and Porosity Prediction of CO2 Blown Polystyrene Foams.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F17%3A00484016" target="_blank" >RIV/67985858:_____/17:00484016 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22340/17:43913545 RIV/49777513:23640/17:43932480
Result on the web
<a href="http://dx.doi.org/10.1016/j.supflu.2017.03.013" target="_blank" >http://dx.doi.org/10.1016/j.supflu.2017.03.013</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.supflu.2017.03.013" target="_blank" >10.1016/j.supflu.2017.03.013</a>

Result language
angličtina
Original language name
Vitrification Conditions and Porosity Prediction of CO2 Blown Polystyrene Foams.
Original language description
Experiments with CO2-blown hanging polystyrene (PS) films were carried out. The porosity of foams decreased with decreasing film thickness, indicating thus effects of heat and/or mass transfer. Taking into account the Joule-Thomson effect, mathematical model based on a simplified heat balance for the system PS+CO2 at the conditions of PS saturation with CO2 on one side and at the conditions of foam vitrification at glass transition temperature on the other side was derived to estimate the foam porosity. The model was applied to data on CO2-blown hanging films as well as literature data on foaming of PS particles. The trends of porosity dependence on saturation temperature and film thickness predicted by the model correspond to experimental results. The Joule-Thomson effect included in the modelling of the CO2 foaming process significantly affects the foam porosity and improves the predictive capabilities of simple model based on enthalpy balance and thermodynamic data.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20402 - Chemical process engineering

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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