Antioxidant effect of lignite humic acids and their salts on the thermo-oxidative stability/degradation of polyvinyl alcohol blends

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F08%3APU71008" target="_blank" >RIV/00216305:26310/08:PU71008 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Antioxidant effect of lignite humic acids and their salts on the thermo-oxidative stability/degradation of polyvinyl alcohol blends

Original language description

We demonstrate the antioxidant potential of humic acids in (green) polymer chemistry. Lignite humic acids and their sodium and ammonium salts were mixed at different concentrations with polyvinyl alcohol and thermogravimetry was used to assess the influence on the thermo-oxidative stability of resulted blends. Both protonized form and ammonium salt of humic acids caused the increased stability of investigated polymers in the studied concentration range (0.5-10% of humic acids in polymer). In contrast toprotonized form the ammonium salt showed also moderating effect on polymer degradation kinetics. Sodium salts caused substantially lower stabilizing effect and presence of 10% of humic matter caused even the destabilization. In all cases, however, whenthe degradation already started, the presence of humic acids and their salts caused more intensive polymer decomposition which resulted in lower weight of char.

Czech name

Antioxidační účinek lignitických huminových kyselin a jejích solí na termo-oxidační stabilitu a degradaci polyvinylalkoholu

Czech description

Antioxidační účnek lignitických huminových kyselin a jejích solí na termo-oxidační stabilitu a degradaci polyvinylalkoholu

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

<a href="/en/project/GA105%2F05%2F0404" target="_blank" >GA105/05/0404: Progressive and efficient non-energetical applications of lignite</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2008

Confidentiality

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

Name of the periodical

Environmental Chemistry Letters

ISSN

1610-3653

e-ISSN

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Volume of the periodical

6

Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

5

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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