Micro-Cellular Polystyrene Foam Preparation Using High Pressure CO2: The Influence of Solvent Residua

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F13%3A43895804" target="_blank" >RIV/60461373:22340/13:43895804 - isvavai.cz</a>

Výsledek na webu

<a href="http://onlinelibrary.wiley.com/doi/10.1002/masy.201300061/full" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/masy.201300061/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/masy.201300061" target="_blank" >10.1002/masy.201300061</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Micro-Cellular Polystyrene Foam Preparation Using High Pressure CO2: The Influence of Solvent Residua

Popis výsledku v původním jazyce

Polystyrene (PS) foams are commonly used as heat insulators. Their heat insulation properties can be greatly improved by decreasing the cell size into the range of micrometres, resulting in the so-called micro-cellular foams. We prepared micro-cellular PS foams and studied the influence of toluene residua on the foam structure. First, PS films were prepared by the dip-coating method using toluene as the solvent. Then, the PS films were foamed by the pressure induced foaming method using high pressure CO2. The foam structures were examined by Scanning Electron Microscopy and X-ray micro-tomography. For the industrial PS sample containing nucleation agents, the influence of temperature and depressurization rate on cell size was observed in a way consistent with the literature. However, the obtained cell sizes were much larger. Therefore, the effect of toluene residua on the foaming process was systematically studied. A PS sample without nucleation agents was used to exclude their effect

Název v anglickém jazyce

Micro-Cellular Polystyrene Foam Preparation Using High Pressure CO2: The Influence of Solvent Residua

Popis výsledku anglicky

Polystyrene (PS) foams are commonly used as heat insulators. Their heat insulation properties can be greatly improved by decreasing the cell size into the range of micrometres, resulting in the so-called micro-cellular foams. We prepared micro-cellular PS foams and studied the influence of toluene residua on the foam structure. First, PS films were prepared by the dip-coating method using toluene as the solvent. Then, the PS films were foamed by the pressure induced foaming method using high pressure CO2. The foam structures were examined by Scanning Electron Microscopy and X-ray micro-tomography. For the industrial PS sample containing nucleation agents, the influence of temperature and depressurization rate on cell size was observed in a way consistent with the literature. However, the obtained cell sizes were much larger. Therefore, the effect of toluene residua on the foaming process was systematically studied. A PS sample without nucleation agents was used to exclude their effect

Druh

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

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GPP106%2F12%2FP673" target="_blank" >GPP106/12/P673: Studium transportu tepla v nanostrukturách</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Macromolecular Symposia

ISSN

1521-3900

e-ISSN

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Svazek periodika

333

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

7

Strana od-do

266-272

Kód UT WoS článku

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EID výsledku v databázi Scopus

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