Detail publikace

Resistance of polyvinyl alcohol blends stabilized by sodium and ammonium salts of lignite humic acids against gamma-irradiation

BAKAJOVÁ, B. ILČIN, M. HOLÁ, O. KUČERÍK, J.

Originální název

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

The dried blends containing sodium and ammonium salts of lignite humic acids (humates 0.5-10 % w/w) in polyvinyl alcohol (PVA) were exposed to high dosage of c-irradiation in the range of doses 127-806 kGy. Resulted products were then tested for their stability using thermogravimetrical analysis. As a reference the nontreated blends were used since the pure PVA exposed to gamma-irradiation very quickly lost its stability and resulting consistence did not allow the stability tests. Stabilities showed a strong concentration and counterion dependency. While sodium counterion caused mostly destabilization with increasing dose, the ammonium counterion acted in an opposite way. The tests carried out in a moisturizing container revealed the changes in water absorbing capacity of irradiated samples and allowed partial explanation of humate stabilizing effect. Generally, at lower concentration of a humate the increase was observed with an increase in the c-irradiation dose and vice versa. The results confirmed the antioxidant and stabilizing effect of humic acids added to some synthetic polymers and their applicability in materials exposed to c-irradiation.

Klíčová slova

Lignite humic acids salts, Antioxidants, Crosslinking, gamma-irradiation

Autoři

BAKAJOVÁ, B.; ILČIN, M.; HOLÁ, O.; KUČERÍK, J.

Rok RIV

2011

Vydáno

3. 1. 2011

Nakladatel

SpringerLink

Místo

Hungary

ISSN

0236-5731

Periodikum

Journal of Radioanalytical and Nuclear Chemistry

Ročník

287

Číslo

Stát

Maďarsko

Strany od

449

Strany do

458

Strany počet

BibTex

@article{BUT50054,
  author="Barbora {Bakajová} and Michal {Ilčin} and Olga {Holá} and Jiří {Kučerík}",
  title="Resistance of polyvinyl alcohol blends stabilized by sodium and ammonium salts of lignite humic acids against gamma-irradiation",
  journal="Journal of Radioanalytical and Nuclear Chemistry",
  year="2011",
  volume="287",
  number="2",
  pages="449--458",
  issn="0236-5731"
}