Contribution to the Study of Fungal Attack on Some Plasticized Vinyl Formulations

Biodegradation of blend films PVA/PVC, PVA/PCL in soil and soil with landfill leachate

“…The molecules fragments could be metabolized by the fungi and the craters and erosions on the material surface were the result of microorganisms activity. Since the microorganisms use the polymeric surface components and products of its own metabolism, they release organic acids as metabolites aggressive and esterases, growing deeply in the material, resulting in enlarging the damaged area and thus accentuating the degradation (El-Aghoury et al, 2006). The PCL film ( Fig.…”

Antifungal properties and material characteristics of PVC and wood/PVC composites doped with carbamate-based fungicides

“…The mechanism of biodegradation by decay fungi generally involves microfouling or biofilm formation and physical penetration into the material matrix accompanied by a chemical reaction (enzymatic degradation) process at the reactive site of materials , whereas stain fungi can grow on the surface of PVC materials as well as colonize deep into the wood of the composites, subsequently producing masses of colored spores from shades of green to black. Although there is still no convincing evidence for the degradation of the PVC backbone by microbes, some additives in PVC formulations—such as softeners or plasticizers, lubricants, cellulosic substances (e.g., wood particles), and organic stabilizers—have been found to affect the degree of fungal susceptibility, because they can be utilized as nutritive carbon and energy sources for the growth of fungi .…”

Innovative green nanocomposites based on silicate clays/lignin/natural fibres

“…Combinations of isolated lignin with thermoplastic polymers such as polyethylene [2], polypropylene [2,3], polystyrene [2,4] polyethylene oxide [2,5], polyvinylchloride [6,7], polyethyleneterephthalate [8], polylactic acid [9] and many others [10,11] have already been reported. In some cases, lignin behaves as a nucleating agent [8] or either improves antioxidant [3] and antifungal [6] properties of the end-products.…”

“…In some cases, lignin behaves as a nucleating agent [8] or either improves antioxidant [3] and antifungal [6] properties of the end-products.…”