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Statements

Subject Item
n2:RIV%2F60461373%3A22320%2F08%3A00019614%21RIV13-GA0-22320___
rdf:type
skos:Concept n14:Vysledek
dcterms:description
Poly(ethylene terephthalate) (PETP) from disposed beverage bottles was used as a secondary material for the preparation of aromatic-aliphatic copolyesters. Through a solvolysis of PETP by an aqueous solution of L-lactic acid, a mixture of low-molar-mass aromatic-aliphatic esters is formed; the polycondensation (at 250 oC) of this mixture yields copolyesters, biologically degradable uder both aerobic and anaerobic conditions. In order to test the anaerobic degradability of the copolyesters, sludge from waste water treatment plant was used as an inoculum. The development of the degradation was monitored as a change of the molecular structure of the copolyesters. Their decomposition through the effect of a mixed culture of microorganisms included in the medium used was accompanied by an intensive release of biogas. The test of the ecotoxicity based on the germinating capacity of the Sinapis alba seeds showed a harmlessness of the degradation products of the copolyester. Poly(ethylene terephthalate) (PETP) from disposed beverage bottles was used as a secondary material for the preparation of aromatic-aliphatic copolyesters. Through a solvolysis of PETP by an aqueous solution of L-lactic acid, a mixture of low-molar-mass aromatic-aliphatic esters is formed; the polycondensation (at 250 oC) of this mixture yields copolyesters, biologically degradable uder both aerobic and anaerobic conditions. In order to test the anaerobic degradability of the copolyesters, sludge from waste water treatment plant was used as an inoculum. The development of the degradation was monitored as a change of the molecular structure of the copolyesters. Their decomposition through the effect of a mixed culture of microorganisms included in the medium used was accompanied by an intensive release of biogas. The test of the ecotoxicity based on the germinating capacity of the Sinapis alba seeds showed a harmlessness of the degradation products of the copolyester.
dcterms:title
PET scrap ? possible base material for biodegradable polymers PET scrap ? possible base material for biodegradable polymers
skos:prefLabel
PET scrap ? possible base material for biodegradable polymers PET scrap ? possible base material for biodegradable polymers
skos:notation
RIV/60461373:22320/08:00019614!RIV13-GA0-22320___
n3:aktivita
n4:P n4:Z
n3:aktivity
P(GA203/06/0528), Z(MSM6046137302), Z(MSM6046137308)
n3:dodaniDat
n8:2013
n3:domaciTvurceVysledku
n5:8291411 n5:3207706
n3:druhVysledku
n21:D
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
386399
n3:idVysledku
RIV/60461373:22320/08:00019614
n3:jazykVysledku
n18:eng
n3:klicovaSlova
poly(ethylene terephthalate), aromatic-aliphatic copolyesters, anaerobic biodegradation
n3:klicoveSlovo
n9:aromatic-aliphatic%20copolyesters n9:poly%28ethylene%20terephthalate%29 n9:anaerobic%20biodegradation
n3:kontrolniKodProRIV
[16C078F6E454]
n3:mistoKonaniAkce
Ostrava
n3:mistoVydani
Ostrava
n3:nazevZdroje
12th Conference on Environment and Mineral Processing
n3:obor
n15:DJ
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:projekt
n7:GA203%2F06%2F0528
n3:rokUplatneniVysledku
n8:2008
n3:tvurceVysledku
Hyniová, Zuzana Prokopová, Irena Šmejkalová, Pavla Keclík, František
n3:typAkce
n19:EUR
n3:zahajeniAkce
2008-06-05+02:00
n3:zamer
n17:MSM6046137308 n17:MSM6046137302
s:numberOfPages
6
n10:hasPublisher
Vysoká škola báňská - Technická univerzita Ostrava
n12:isbn
978-80-248-1775-0
n22:organizacniJednotka
22320