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wavelength at specific time intervals throughout the pre-irradiation storage period of 63 days. The exchange in absorbance at 537 nm as a function of storage time relative to that earlier than storage (immediately after stripping) is proven in Fig. 6a. It can be considered that the films exhibit a decrease in absorbance at the same point of the first 5 days after that the films have tended to be nearly stable until the end of storage duration in case of both conditions of storage (dark & light).

The color stability of (0.62 phr) DTH /PVA films was once examined using, storing the films at room temperature (25oC ±2) in the dark and under laboratory fluorescent light. The absorbance of these films was measured at 537 nm

The color stability of (0.62 phr) DTH /PVA films was once examined using, storing the films at room temperature (25oC ±2) in the dark and under laboratory fluorescent light. The absorbance of these films was measured at 537 nm