عنوان مقاله [English]
نویسندگان [English]چکیده [English]
In this research, the decay resistance of commercial polypropylene-pistachio twigs flour composite with and without pigment was investigated against the white-rot fungi 'Trametes versicolor' and the brown-rot fungus 'Coniophora puteana'. The composite specimens containing 60% pistachio twig flour were exposed to a decay test according to modified ASTM D 1413 standard for 3 months. The results showed that the composite could be decayed. With analyzing the data, it was shown that the weight loss of the composite due to decay by C. puteana was significantly higher than that for T. versicolor however, the presence of the pigment did not have any significant affect on the weight loss of the composite. Scanning electron microscopic (SEM) showed cracks and voids in the control (unexposed samples), as well as the fungal hyphae penetration into the samples decayed by C. puteana. Nevertheless white rot fungi create a surface decay.