The optical, thermal and mechanical properties of a commercial pearlescent and multilayer BOPP film were determined in the present study. The film was polypropylene and it was biaxially oriented. Thermal gravimetric analysis indicated 11.2 % of calcite in the film. The film thermally degraded in two steps. The first and the second steps were for the polymer fraction and decomposition of calcite respectively. For 10 oC/min heating rate the onset of polypropylene degradation was 250 oC and calcite decomposition was 670 oC. The activation energies for polypropylene degradation and calcite decomposition were 64.8 kJ/mol and 204.8 kJ/mol. The tensile strength of the film in machine and transverse directions were 97.7 and 35.9 MPa respectively.
pearlescent film, BOPP, calcite, tensile strength, thermal gravimetric analysis, перламутровая пленка, БОПП, кальцит, прочность при растяжении, термогравиметрический анализ
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