Effect of Organic Co-blowing Agents on the Morphology of CO2 Blown Microcellular Polystyrene Foams.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F17%3A00476682" target="_blank" >RIV/67985858:_____/17:00476682 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22340/17:43914176 RIV/49777513:23640/17:43932543
Result on the web
<a href="http://dx.doi.org/10.1016/j.supflu.2017.07.026" target="_blank" >http://dx.doi.org/10.1016/j.supflu.2017.07.026</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.supflu.2017.07.026" target="_blank" >10.1016/j.supflu.2017.07.026</a>

Result language
angličtina
Original language name
Effect of Organic Co-blowing Agents on the Morphology of CO2 Blown Microcellular Polystyrene Foams.
Original language description
Microcellular polystyrene (PS) foams blown with supercritical CO2 in batch processes have usually porosities lower than desired for good heat insulators. Porosities can be increased by co-blowing agents. We studied effects of n-pentane (nC5) and cyclopentane (cC5) on foaming in a batch. Neat PS films were impregnated first with nC5 or cC5, then with high-pressure or supercritical CO2, and finally foamed. Cell diameters and bulk porosities were determined from SEM images. The co-blowing agents reduced the solid skin, they acted mainly as plasticizers, both porosity and cell diameters increased with their concentration. After crossing a particular concentration, the cell size remained almost constant. Impregnation of neat PS with high-pressure liquid CO2 near room temperature enabled to prepare foams with cell diameters below 10 μm and porosities about 80 %, which has not been reported before. Hence, organic co-blowing agents could be used to increase the porosity of CO2 blown foams.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
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

Similar results(10)