The WAXD and Tensile Stress and Elongation at the Yield Point of Polypropylene Additived Films

Abstract

AbstractThe study of some properties of commercial polypropylene additived films, that were submitted to UV radiation, has been done for samples that were produced as a prototype for synthetic grass. In the present work, was analyzed by WAXD the area of diffraction peak at 2θ around 17°, that is correlated with the monoclinic crystalline phase in PP, and its reciprocal width at half weight, and also the tensile stress and the elongation in the yield point. All these properties were analyzed as a function of the sample exposure time under UV radiation in the accelerated mode. To clarify the behavior found for these properties were also analyzed by WAXD some samples that have been heated at 200 °C and cooled at room temperature. These studies show that the samples could undergo some modification on their photo‐degradation profile that is correlated with the modification of the PP macromolecular and supramacromolecular structures.