Polyamic acid (PAA) polymers have been utilized over 60 years in
industry as precursors of polyimide, and currently direct utilization of PAA
polymers have got great attention for material science applications. Mass
utilization of synthetic polymers pose threat to living organisms and nature,
so their effective degradation is important. In this study, for the first time,
degradation of 4-sulfonyldipenyl-pyromellitic dianhydride based PAA (DSPAA)
polymers were performed in batch bioreactor system. 1H COSY NMR was
utilized to enlight the possible mechanism behind Tramates versicolor mediated degradation of DSPAA polymer.
Elimination of aromatic peaks belong to DSPAA polymer and its amine monomer
were monitored to evaluate the degradation while formation of new peaks was
taken into account to propose possible degradation pathway. NMR studies
revealed that 20-day incubation in the designed media is enough to totally
eliminate 1 mg/mL DSPAA. The findings can contribute to the knowledge of fungi
mediated aromatic polymer degradation, which is accepted a promising way to
eliminate polymer pollution
Primary Language | English |
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Subjects | Engineering |
Journal Section | Articles |
Authors | |
Publication Date | March 22, 2019 |
Published in Issue | Year 2019 |