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6.8. Synthetic material, nature and synthesis-rubber

It is only few mold-types to fade these substances in the situation. Usually, this ability is at the addition of softeners, emulsifying agents etc.. in the products in link with humidity possibly. Polyvalent alcohols, ester von Ricinolein, - Klaurin - are from the softeners, stearyl and oleic acid as well as derivatives of Adipin and sea wormwood especially suitable fungus-substrates. The mold-growth then leads to a diminution of this of tearing, train and resistance to bending the elasticity and conceivably also the Isolierwirkung of the synthetic materials. In moist-evacuate, synthetic floor-coats (polyamide, polyester) can be attacked by mold.

The with degradation the polyurethanes participating enzymes are proteases, urease and esterases. Following steps are assumed on that occasion: Degradation remaining free Isocynatgruppen, division of amide-groups, setting off of the urethane-groups and division of the rings of the isocyanate-acid-full lots. As well, a reinforced mold-affection occurs with dense-materials (Polysulfid, silicon, and polyurethane-polymer). Dark spots, that are to be led back on ingrown fungus-mycel, exactly near expansion joint in swimming pools show already after few months. Mold at the Silicon joints the bathPrecondition for the fungus-growth on synthetic materials as poem-bulks is an usability of the polymers or enclosed auxiliary-materials, like approximately softeners, as carbon-sources. In general, Silokon-joints are resistant to high extent against fungi and bacterias.

Form 6.8.1.: Silicon joints in a shower. Here, one can clearly recognize it grew over through molds.

... Synthetic material-finery and finery-mortars contain up to 3 per cent of polyvinyl-acetate, through what the processing eases and should be improved the solidity and elasticity of the material. On such cleaning, Cladosporium herbarum and Stemphylium sp grow. Polyvinyl-acetate itself is not attacked by the fungus. In the alkaline finery, however, the polymer becomes hydrolysiert to polyvinyl-alcohol and acetate; the more final link then serves the fungi as C-Quelle.
Also bacterias are at the destruction of Nature-rubber involve, probably mycobacteriums and Streptomyceten [19], even if he/it is moved with toxicants.

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