Biodegradace směsných polymerů obsahujících PVAL/Xanthan v půdním prostředí

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Biodegradability of mixed plastics containing PVAL/Gellan and PVAL/Xanthan in soil environment

Popis výsledku v původním jazyce

The aim of the study was to review the impact of different Xanthan and Gellan proportion to biodegradability in soil environment of their mixtures with polyvinylalcohol (PVAL) and glycerol, with regard to mechanical properties of the mixtures. Tested mixed granulates containing 10,5 %, 21 % and 42 % of Xanthan or Gellan were prepared on two - screw thread extruder LABtech.The tensile strengh of the mixtures was decreasing with increasing polysacharides content, in the tested range within cca 20%, whereas the Gellan mixtures constantly showed lower values than Xanthan ones. The strain decreasing was more evident - between first two samples at cca 30%, by the last mixtures (containing 42% of polysacharides) the values approximated to zero. Obviously, thereaching of aplicable physicomechanical features will be compromising but eventually hardly achieved.According to DCO2max level of biodegradation, all the polymeric mixtures appeared as hardly degradable in the soil environment. These re

Název v anglickém jazyce

Biodegradability of mixed plastics containing PVAL/Gellan and PVAL/Xanthan in soil environment

Popis výsledku anglicky

The aim of the study was to review the impact of different Xanthan and Gellan proportion to biodegradability in soil environment of their mixtures with polyvinylalcohol (PVAL) and glycerol, with regard to mechanical properties of the mixtures. Tested mixed granulates containing 10,5 %, 21 % and 42 % of Xanthan or Gellan were prepared on two - screw thread extruder LABtech.The tensile strengh of the mixtures was decreasing with increasing polysacharides content, in the tested range within cca 20%, whereas the Gellan mixtures constantly showed lower values than Xanthan ones. The strain decreasing was more evident - between first two samples at cca 30%, by the last mixtures (containing 42% of polysacharides) the values approximated to zero. Obviously, thereaching of aplicable physicomechanical features will be compromising but eventually hardly achieved.According to DCO2max level of biodegradation, all the polymeric mixtures appeared as hardly degradable in the soil environment. These re

Druh

D - Stať ve sborníku

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název statě ve sborníku

ChemPor 2008

ISBN

978-972-97810-4-9

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

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Název nakladatele

Universidade do Minho

Místo vydání

Braga, Portugalsko

Místo konání akce

Braga, Portugalsko

Datum konání akce

4. 9. 2008

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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