Upgrading Polyolefin Plastic Waste into Multifunctional Porous Graphene using Silicone‐Assisted Direct Laser Writing

Author:

Qu Menglong1,Guo Yani23,Cai Yahan1,Nie Zhengwei2,Zhang Cheng1ORCID

Affiliation:

1. College of Engineering Nanjing Agricultural University Nanjing 210031 China

2. School of Mechanical and Power Engineering Nanjing Tech University Nanjing 211816 China

3. Sinopec Nanjing Engineering & Construction Incorporation Nanjing 210049 China

Abstract

AbstractThe widespread use of plastics, especially polyolefin including polyethylene and polypropylene, has led to severe environmental crises. Chemical recycling, a promising solution for extracting value from plastic waste, however, is underutilized due to its complexity. Here, a simple approach, silicone‐assisted direct laser writing (SA‐DLW) is developed, to upgrade polyolefin plastic waste into multifunctional porous graphene, called laser‐induced graphene (LIG). This method involves infiltrating polyolefins with silicone, which retards ablation during the DLW process and supplies additional carbon atoms, as confirmed by experimental and molecular dynamic results. A remarkable conversion yield of 38.3% is achieved. The upgraded LIG exhibited a porous structure and high conductivity, which is utilized for the fabrication of diverse energy and electronic devices with commendable performance. Furthermore, the SA‐DLW technique is versatile for upgrading plastic waste in various types and forms. Upgrading plastic waste in the form of fabric has significantly simplified pre‐treatment. Finally, a wearable flex sensor is fabricated on the non‐woven fabric of a discarded medical mask, which is applied for gesture monitoring. This work offers a simple but effective solution to upgrade plastic waste into valuable products, contributing to the mitigation of environmental challenges posed by plastic pollution.

Funder

National Natural Science Foundation of China

Fundamental Research Funds for the Central Universities

Jiangsu Agricultural Science and Technology Innovation Fund

China Postdoctoral Science Foundation

Natural Science Foundation of Jiangsu Province

Publisher

Wiley

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