The oxygen barrier properties of composite materials, consisting of a 45 μm thick LDPE substrate coated by a thin layer (0.7–1 μm) of new hybrid organic–inorganic materials based on SiO2 and PE-PEG block copolymers, have been characterized at 35 and 50 °C. A significant decrease (25–40%) of the oxygen transfer rate has been observed for coated samples with respect to bare substrate both at 35 and 50 °C. The effects on the coating permeability of organic–inorganic ratio, molecular weight of the PE-PEG block copolymers and temperature are discussed.
M. Minelli, M.G. De Angelis, F. Doghieri, M. Marini, M. Toselli, F. Pilati (2008). Oxygen permeability of novel organic–inorganic coatings: I. Effects of organic–inorganic ratio and molecular weight of the organic component. EUROPEAN POLYMER JOURNAL, 44, 2581-2588 [10.1016/j.eurpolymj.2008.06.006].
Oxygen permeability of novel organic–inorganic coatings: I. Effects of organic–inorganic ratio and molecular weight of the organic component
MINELLI, MATTEO;DE ANGELIS, MARIA GRAZIA;DOGHIERI, FERRUCCIO;TOSELLI, MAURIZIO;
2008
Abstract
The oxygen barrier properties of composite materials, consisting of a 45 μm thick LDPE substrate coated by a thin layer (0.7–1 μm) of new hybrid organic–inorganic materials based on SiO2 and PE-PEG block copolymers, have been characterized at 35 and 50 °C. A significant decrease (25–40%) of the oxygen transfer rate has been observed for coated samples with respect to bare substrate both at 35 and 50 °C. The effects on the coating permeability of organic–inorganic ratio, molecular weight of the PE-PEG block copolymers and temperature are discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
