The effect of poly(vinyl alcohol) type and radiation treatment on the properties of starch-poly(vinyl alcohol) films
PBN-AR
Instytucja
Instytut Chemii i Techniki Jądrowej
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
RADIATION PHYSICS AND CHEMISTRY (25pkt w roku publikacji)
ISSN
0969-806X
EISSN
Wydawca
PERGAMON-ELSEVIER SCIENCE LTD
DOI
URL
Rok publikacji
2017
Numer zeszytu
Strony od-do
142-148
Numer tomu
141
Liczba arkuszy
Słowa kluczowe
EN
Starch-PVA film
Starch-(polyvinyl alcohol) blend
Gamma irradiation
Electron irradiation
Mechanical properties
Physicochemical properties
Streszczenia
Język
EN
Treść
Our present study concerns the effect of application of various PVA substrates and the influence of ionising radiation on the properties of films based on starch and PVA. Four PVAs revealing various molecular masses (in the range of 11–145 kDa) were selected for this purpose. The films characterized by starch: PVA ratios of 40:60 were prepared by solution casting and irradiated with 60Co gamma rays (under nitrogen) and with fast electrons (under air) applying the absorbed dose of 25 kGy. Mechanical properties of the films (tensile strength, elongation at break and Young Modulus) were examined, as well as the contact angle to water and swelling in water, in regard for evaluation of the hydrophilic/hydrophobic properties. Gel content in the samples was also determined. Physicochemical properties of the films and their sensitivity to irradiation strongly depend on the applied PVA substrate. This can be related to differences in the capability of particular PVAs for forming the crosslinked starch-PVA network during the films’ synthesis and future treatment. In particular, the usage of the PVA characterized by the high molecular mass has appeared more rewarding as compared to those based on the low molecular mass PVAs. Additionally, properties of these films were not affected or improved after irradiation.
Cechy publikacji
artykuł oryginalny
Inne
System-identifier
PX-5a48fd6ed5deb3ae41aceba9
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