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M. Stepczyńska, K. Moraczewski, R. Malinowski, M. Żenkiewicz

Effects of UV radiation on some properties of dyed polylactide film (in English)

Polimery 2017, No 3, 193


DOI: dx.doi.org/10.14314/polimery.2017.193

Summary

The effects of the UV radiation on the surface geometrical structure, phase transition temperatures, and the temperature of the onset of thermal decomposition of a polylactide film containing 2 wt % of dye are presented. The surface geometrical structure was examined using a scanning electron microscope (SEM) and atomic force microscope (AFM). The temperatures of both the phase transitions and the changes in the melting enthalpy of the crystalline phase were determined using a differential scanning calorimeter (DSC). The temperature of the onset of thermal decomposition of the film was determined with a thermogravimetry (TG) instrument. It was found that the UV radiation generated in an aging test chamber mostly causes changes in the surface geometrical structure of the examined film and reduces the onset temperature of the film thermal decomposition.
Keywords: biodegradable polymers, polylactide, UV aging, scanning electron microscopy, atomic force microscopy, differential scanning calorimetry, thermogravimetry
e-mail: m.stepczynska@ukw.edu.pl
M. Stepczyńska, K. Moraczewski, R. Malinowski, M. Żenkiewicz (1.14 MB)
Effects of UV radiation on some properties of dyed polylactide film (in English)