Converting Polymer Trash into Treasure: An Approach to Prepare MoS2Nanosheets Decorated PVDF Sponge for Oil/Water Separation and Antibacterial Applications

Remanan, S and Padmavathy, N and Rabiya, R and Ghosh, S and Das, TK and Bose, S and Sen, R and Das, NC (2020) Converting Polymer Trash into Treasure: An Approach to Prepare MoS2Nanosheets Decorated PVDF Sponge for Oil/Water Separation and Antibacterial Applications. In: Industrial and Engineering Chemistry Research, 59 (45). pp. 20141-20154.

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Abstract

Polymer waste is an "Achilles heel"in the product life cycle and can cause environmental pollution. Different methods can be used to reprocess such waste, including incineration and recycling, which can reduce trash accumulation in the environment. However, less attention is given to managing scrap generated during polymer processing. Herein, a monolithic poly(vinylidene fluoride) (PVDF) sponge was developed from the etchant solution of a poly(ethylene-co-methyl acrylate)/poly(vinylidene fluoride) (EMA/PVDF) blend prepared by reverse immersion precipitation (IP). The etchant solution was waste-generated during the preparation of the polymer membrane by "selective etching". The spongy surface was modified using the molybdenum disulfide nanosheets/vinyltrimethoxysilane (MoS2/VTMS)-derived coating, and its oil/water separation and antibacterial properties were analyzed. The modified sponge showed excellent antibacterial activity against pathogenic Escherichia coli (E. coli) bacteria, and its the zone of inhibition was measured (27 ± 2 mm). The separation (>90) and recovery (88) efficiency of the dioctyl phthalate (DOP) oil were studied, and the modified sponge exhibited consistent oil/water separation up to six repeated cycles. Hence, this newly developed sponge nanocomposite would be a sustainable and model candidate for the effective utilization of waste generated during polymer processing. © 2020 American Chemical Society.

Item Type:	Journal Article
Publication:	Industrial and Engineering Chemistry Research
Publisher:	American Chemical Society
Additional Information:	The copyright of this article belongs to American Chemical Society
Keywords:	Escherichia coli; Etching; Ethylene; Fluorine compounds; Layered semiconductors; Life cycle; Molybdenum compounds; Polymers; Scrap metal reprocessing; Separation; Sulfur compounds, Anti-bacterial activity; Antibacterial properties; Environmental pollutions; Immersion precipitation; Molybdenum disulfide nanosheets; Oil/water separation; Pathogenic Escherichia coli; Poly (vinylidene fluoride)(PVDF), Waste incineration
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	01 Jan 2021 10:52
Last Modified:	01 Jan 2021 10:52
URI:	http://eprints.iisc.ac.in/id/eprint/67449

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