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Statements

Subject Item
n2:RIV%2F68407700%3A21220%2F08%3A00156863%21RIV10-GA0-21220___
rdf:type
n13:Vysledek skos:Concept
dcterms:description
Packaging materials based on expanded polystyrene can be substituted by a biodegradable foam, manufactured by direct or indirect electrical heating of a potato starch suspension in a closed mold. This paper deals with an experimental evaluation of selected properties of potato starch and starch foam related to this technology: density, specific heat capacity and specific electrical conductivity of a water suspension of potato starch within the temperature range up to 100°C, and mass fraction from 5 to 65 %. The electric conductivity and heat capacity changes were observed during direct ohmic heating of a starch suspension between electrodes in a closed cell (feeding voltage 100 V, frequency 50 Hz). Specific electric conductivity increases with temperature, with the exception of the gelatinization region at 60 to 70°C, and decreases with increasing concentration of starch (the temperature and concentration dependencies were approximated using the Lorentz equation). Packaging materials based on expanded polystyrene can be substituted by a biodegradable foam, manufactured by direct or indirect electrical heating of a potato starch suspension in a closed mold. This paper deals with an experimental evaluation of selected properties of potato starch and starch foam related to this technology: density, specific heat capacity and specific electrical conductivity of a water suspension of potato starch within the temperature range up to 100°C, and mass fraction from 5 to 65 %. The electric conductivity and heat capacity changes were observed during direct ohmic heating of a starch suspension between electrodes in a closed cell (feeding voltage 100 V, frequency 50 Hz). Specific electric conductivity increases with temperature, with the exception of the gelatinization region at 60 to 70°C, and decreases with increasing concentration of starch (the temperature and concentration dependencies were approximated using the Lorentz equation).
dcterms:title
Properties of Starch Based Foams Made by Thermal Pressure Forming Properties of Starch Based Foams Made by Thermal Pressure Forming
skos:prefLabel
Properties of Starch Based Foams Made by Thermal Pressure Forming Properties of Starch Based Foams Made by Thermal Pressure Forming
skos:notation
RIV/68407700:21220/08:00156863!RIV10-GA0-21220___
n3:aktivita
n10:P n10:V
n3:aktivity
P(GA101/06/0535), V
n3:cisloPeriodika
6
n3:dodaniDat
n15:2010
n3:domaciTvurceVysledku
n7:2077205 n7:1885812 n7:8932050
n3:druhVysledku
n14:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n8:predkladatel
n3:idSjednocenehoVysledku
390513
n3:idVysledku
RIV/68407700:21220/08:00156863
n3:jazykVysledku
n4:eng
n3:klicovaSlova
starch; starch suspension; starch foam; direct ohmic heating; indirect heating; electric conductivity of a starch suspension
n3:klicoveSlovo
n5:indirect%20heating n5:electric%20conductivity%20of%20a%20starch%20suspension n5:direct%20ohmic%20heating n5:starch%20suspension n5:starch%20foam n5:starch
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[543FD080F904]
n3:nazevZdroje
Acta Polytechnica
n3:obor
n17:GM
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
4
n3:projekt
n18:GA101%2F06%2F0535
n3:rokUplatneniVysledku
n15:2008
n3:svazekPeriodika
48
n3:tvurceVysledku
Žitný, Rudolf Šesták, Jiří Skočilas, Jan
s:issn
1210-2709
s:numberOfPages
10
n12:organizacniJednotka
21220