The influence of ionizing radiation on the properties o starch-PVA films
PBN-AR
Instytucja
Instytut Chemii i Techniki Jądrowej
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Nukleonika. International Journal of Nuclear Research
ISSN
0029-5922
EISSN
Wydawca
Instytut Chemiii i Techniki Jądrowej
Rok publikacji
2015
Numer zeszytu
3(Pt.2)
Strony od-do
669-677
Numer tomu
60
Identyfikator DOI
Liczba arkuszy
Słowa kluczowe
en
starch,
poly(vinyl alcohol),
films,
ionizing radiation,
mechanical properties,
physicochemical properties
Open access
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Licencja otwartego dostępu
Creative Commons — Uznanie autorstwa-Niekomercyjne-Bez utworów zależnych
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Streszczenia
Język
en
Treść
The cornstarch: poly(vinyl alcohol) (PVA) fi lms characterized by the alternating ratio of starch:PVA (100:0, 80:20, 60:40, 40:60, 20:80, and 0:100) and containing 30% of glycerol were prepared by solution casting. The films were irradiated with an absorbed dose of 25 kGy with gamma rays in a vacuum and with fast electrons in the air. The fi lms characterized by a high content of starch appeared stiff, while the fi lms characterized by a high content of PVA were highly fl exible. The tensile strength and fl exibility, as well as swelling and hydrophilicity, increased with the increase in the PVA content in the fi lms. However, the tensile strength and wetting angle values achieved a minimum at an intermediate composition. It was found that irradiation enables to reduce hydrophilicity of the fi lms accompanied by a decrease in their fl exibility. No general conclusion concerning the effect of irradiation on tensile strength and swelling behavior can be derived. An increase in the homogeneity of the fi lms and an increase in the compatibility of their components was found by scanning electron microscopy (SEM). Strong interactions of the starch and the PVA components were discovered by diffuse reflectance spectroscopy. Degradation was found to be the prevailing process occurring in the fi lms under the influence of irradiation. The possible accompanying crosslinking is discussed in terms of the gel content in the samples. Creation of various oxidation products in the films characterized by the modifi ed composition was observed under the infl uence of irradiation carried out in the air. Basing on the obtained results it can be supposed that the selected starch-PVA compositions might appear useful as packagings of the products predicted for radiation decontamination.
Cechy publikacji
artykuł oryginalny, recenzowany
Inne
System-identifier
PX-5698a4bc810641ecf919c130
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