The biodegradation of POLYESTER (cas 113669-97-9) and POLYESTER (cas 113669-97-9) polyurethane coatings using Papiliotrema laurentii

Add time:08/21/2019    Source:sciencedirect.com

The rate and severity of polyurethane (PU) coating degradation is due to a combination of both abiotic and biotic factors. The contribution of biotic factors to the degradation process has not been fully realized, in part, because it is assumed that microorganisms cannot survive exclusively on polyurethane-based coatings. We isolated a strain of Papiliotrema laurentii that, as a biofilm, is capable of degrading a POLYESTER (cas 113669-97-9)-based polyurethane coating. The biodegradation potential of this strain was screened initially with Impranil®-DLN and then against biodegradable polyesters (polyethylene succinate and polyethylene adipate) and a thermoset polyester polyether polyurethane, Irogran®, with no additional carbon sources over 8 days at a relative humidity of >95%. We confirmed that P. laurentii preferentially hydrolyzed both polyesters coatings and the polyester segment of Irogran® coatings using optical and infrared microscopy techniques. The chemical and metabolic differences observed during the degradation of PES coatings compared to PEA and Irogran® coatings indicate that growth was not required for these coatings to be degraded. This strain of P. laurentii can both hydrolyze and metabolize polyester-based coatings under high humidity over 8 days. These microscopic and analytical data revealed how biodegradation was potentially linked to survival using this fungus isolated from the environment.

We also recommend Trading Suppliers and Manufacturers of POLYESTER (cas 113669-97-9). Pls Click Website Link as below: cas 113669-97-9 suppliers

Prev:Characterization of the chemical reactivity and nephrotoxicity of N-acetyl-S-(1,2-dichlorovinyl)-l-cysteine sulfoxide, a potential reactive metabolite of trichloroethylene
Next:Lipase catalyzed modification of functionalized POLYESTER (cas 113669-97-9) binders)