Rapid degradation of cellulose diacetate by marine microbes

This article investigates the environmental degradation of cellulose diacetate (CDA), a widely used form of cellulose acetate, in marine conditions. Using films, fibers, and foam materials exposed to flowing natural seawater, the study examines how native microbial communities colonize and break down CDA over time.

The work evaluates material disintegration, microbial activity, respiration, and compositional changes, while comparing cellulose diacetate with natural cellulose materials and conventional petroleum-based plastics.

The findings show that cellulose diacetate supports active microbial growth and enzymatic activity, leading to substantial biodegradation and respiration in seawater, whereas conventional plastic controls exhibited little change. Evidence from mass loss measurements, isotopic analyses, and microbial assays indicates that marine microorganisms can rapidly utilize cellulose diacetate as a carbon source and that both cellulose and acetyl components are degraded during the process. These results are significant for the evaluation of cellulose acetate products in applications where environmental persistence is a concern, providing data relevant to material design, product stewardship, regulatory discussions, and future research into biodegradable cellulose-based alternatives.

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