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Efficient Synthesis and Wetting Characteristics of Amphiphilic Galactose–PLA Block Copolymers: A Potential Additive for the Accelerated Biodegradation of Micro‐ and Nanoplastics
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Researchers synthesized degradable block copolymers containing galactose segments to help microplastic-degrading bacteria attach to plastic surfaces in wastewater. This novel approach could accelerate microbial breakdown of microplastic particles by improving bacterial adhesion to their surfaces.
Abstract The contamination of wastewater by microplastic particles (MPs) is an unresolved environmental problem. In order to resolve this problem, a concept is developed for the microbial remediation of MPs. To realize this concept, degradable block copolymers are required, which adhere on MP surfaces and contain segments of carbohydrate moieties (here galactose) for the attraction of degrading microbes and accelerated biofilm formation. Therefore, in this study, a versatile synthesis route for amphiphilic carbohydrate block copolymers from poly( d,l ‐lactic acid) (PLA) and galactose moieties is presented. The properties of the block copolymers are investigated by thermal analysis, as well as regarding their colloidal properties, their adhesion behavior on MP surfaces, and their potential for support of microbial growth (using Lacticaseibacillus zeae ).
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