STUDY OF MICROORGANISMS THE DESTRUCTORS OF FUNCTIONAL POLYMERIC MATERIALS EXPOSED UNDER CONDITIONS OF TROPICAL CLIMATE SIMULATION
Tests are carried out in various conditions in order to study the microbiological resistance of functional materials and the isolation of new microorganisms-destructors. Polymeric materials and structural elements were exposed for 18 months under imitation of tropical climate weathering conditions. In exposition were used samples of rubber and sealant. Cultures of microscopic fungi were isolated after exposure from the samples surfaces and thereafter their species identified along with theirs occurrence frequency counting. The dominant species of micromycetes were Penicillium lanosum and Cladosporium sphaerospermum. Such species as Penicillium sp. ( non P. lanosum ) , Cladosporium oxysporum and Aspergillus ochraceus were rarely isolated. Single occurrence was noted for Rhizopus oryzae, Aspergillus terreus, Acremonium sp., Stachybotrys chartarum and Trichoderma viride. Most of the isolated fungi are known as destructors of polymeric materials in different climatic zones and environmental conditions