AI Article Synopsis
- Polyethylene, the most widely produced plastic, is created from inert hydrocarbon chains, but adding reactive polar groups can improve its environmental impact and compatibility.
- Researchers demonstrate that nickel complexes can catalyze copolymerization of ethylene and carbon monoxide, incorporating keto groups into polyethylene without sacrificing material quality.
- The modified polyethylene maintains excellent tensile properties similar to standard high-density polyethylene while gaining the ability to break down under light exposure.
Article Abstract
The world’s most abundantly manufactured plastic, polyethylene, consists of inert hydrocarbon chains. The introduction of reactive polar groups in these chains could help overcome problematic environmental persistence and enhance compatibility with other materials. We show that phosphinophenolate-coordinated nickel complexes can catalyze nonalternating copolymerization of ethylene with carbon monoxide to incorporate a low density of individual in-chain keto groups in polyethylene chains with high molecular weight while retaining desirable material properties. After processing by conventional injection molding techniques, tensile properties remain on par with those of standard high-density polyethylene while also imparting photodegradability.
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| http://dx.doi.org/10.1126/science.abi8183 | DOI Listing |
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