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Statements

Subject Item
n2:RIV%2F70883521%3A28110%2F12%3A43867999%21RIV13-MSM-28110___
rdf:type
n13:Vysledek skos:Concept
dcterms:description
Three commercially available biodegradable polymers, two different aromatic-aliphatic copolyesters and polylactic acid, intended for the fabrication of agricultural mulching films, in addition to other applications, were subjected to a series of tests with the aim of studying the relationship between their photooxidation and biodegradation. Photooxidation resulted in the rearrangement of polymeric chains, in the case of both copolyesters the events led to polymeric chain crosslinking and the formation of insoluble polymeric gel. The tendency was significantly more pronounced for the copolyester with the higher content of the aromatic constituent. As regards polylactic acid photochemical reactions were not accompanied by crosslinking but instead provoked chain scissions. A biodegradation experiment showed that, despite marked structural changes, the extent of photooxidation was not the decisive factor, which significantly modified the rate of biodegradation in all three materials investigated. The specific surface area of the sample specimens was shown to be more important. Three commercially available biodegradable polymers, two different aromatic-aliphatic copolyesters and polylactic acid, intended for the fabrication of agricultural mulching films, in addition to other applications, were subjected to a series of tests with the aim of studying the relationship between their photooxidation and biodegradation. Photooxidation resulted in the rearrangement of polymeric chains, in the case of both copolyesters the events led to polymeric chain crosslinking and the formation of insoluble polymeric gel. The tendency was significantly more pronounced for the copolyester with the higher content of the aromatic constituent. As regards polylactic acid photochemical reactions were not accompanied by crosslinking but instead provoked chain scissions. A biodegradation experiment showed that, despite marked structural changes, the extent of photooxidation was not the decisive factor, which significantly modified the rate of biodegradation in all three materials investigated. The specific surface area of the sample specimens was shown to be more important.
dcterms:title
Assessment of the interrelation between photooxidation and biodegradation of selected polyesters after artificial weathering Assessment of the interrelation between photooxidation and biodegradation of selected polyesters after artificial weathering
skos:prefLabel
Assessment of the interrelation between photooxidation and biodegradation of selected polyesters after artificial weathering Assessment of the interrelation between photooxidation and biodegradation of selected polyesters after artificial weathering
skos:notation
RIV/70883521:28110/12:43867999!RIV13-MSM-28110___
n13:predkladatel
n16:orjk%3A28110
n3:aktivita
n19:P
n3:aktivity
P(ED2.1.00/03.0111), P(GAP108/10/0200)
n3:cisloPeriodika
10
n3:dodaniDat
n4:2013
n3:domaciTvurceVysledku
n9:8588716 n9:3917436 n9:5172314
n3:druhVysledku
n18:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
123867
n3:idVysledku
RIV/70883521:28110/12:43867999
n3:jazykVysledku
n17:eng
n3:klicovaSlova
Polylactic acid; Photooxidation; PBAT; Ecoflex; Biodegradation; Aromatic-aliphatic copolyester
n3:klicoveSlovo
n7:Polylactic%20acid n7:Aromatic-aliphatic%20copolyester n7:Biodegradation n7:PBAT n7:Ecoflex n7:Photooxidation
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[A7703DCFE349]
n3:nazevZdroje
Chemosphere
n3:obor
n8:CD
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
7
n3:projekt
n12:ED2.1.00%2F03.0111 n12:GAP108%2F10%2F0200
n3:rokUplatneniVysledku
n4:2012
n3:svazekPeriodika
88
n3:tvurceVysledku
Stloukal, Petr Verney, Vincent Rychlý, Jozef Koutný, Marek Piš, Vladimír Matisová-Rychlá, Lyda Commereuc, Sophie
n3:wos
000307143800011
s:issn
0045-6535
s:numberOfPages
6
n20:doi
10.1016/j.chemosphere.2012.03.072
n6:organizacniJednotka
28110