Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 10, Issue 30, Pages 9860-9871Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.2c01708
Keywords
Plastics; Mixed plastics; Chemical recycling; Selective depolymerization; Sequential depolymerization; & quot;One-pot & quot; depolymerization
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Funding
- National Natural Science Foundation of China [21901249]
- Taishan Scholars Program of Shandong Province [tsqn201812112]
- Scientific Research and Innovation Fund Project of Shandong Energy Research Institute [SEI I202004]
- Zhoushan Science and Technology Project [2020C02001]
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The current focus on performance and durability in commercial plastics has led to a significant challenge in chemical recycling. However, selective depolymerization of mixed plastic waste offers a promising solution to this problem.
The commercial plastics that are currently used in large-scale are primarily concerned with performance and durability, rather than degradability and recyclability. As a result, the chemical recycling of plastics becomes a significant challenge. Selective depolymerization of the mixed plastic waste is a promising solution to the challenges caused by plastic accumulation. Here we present sequential and one-pot depolymerization strategies for chemical recycling of commercial plastics (PLA, BPA-PC, PBS, PBAT, PCL, and PET) and mixed plastics (BPA-PC/ PET, PLA/PBS, and PLA/PBAT) to their initial monomers or value-added chemicals. Taking advantage of the differences in depolymerization reactivity of commercial plastics and versatile catalytic degradation ability of zinc bis[bis(trimethylsilyl)amide] [Zn(HMDS)(2)], the selective depolymerization process was smoothly achieved under mild conditions. These strategies provide ideas for promoting the sustainable development of plastics that are currently being used in large-scale.
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