@article {49825,
	title = {Waste polyethylene to long-chain unsaturated esters and alcohols via alkene cross-metathesis},
	journal = {Journal of Macromolecular Science Part A-Pure and Applied Chemistry},
	volume = {62},
	year = {2025},
	month = {AUG },
	pages = {660-668},
	type = {Article},
	abstract = {<p>
	The conversion of waste polyethylene into valuable long-chain functional molecules offers a contemporary solution to the global plastic waste challenge. This study presents a two-step catalytic approach, comprising of polyethylene (PE) dehydrogenation followed by cross-metathesis with renewable resource-derived functional olefins, catalyzed by the Grubbs-II catalyst (G-II). A dehydrogenated polyethylene (DHP) was subjected to a tandem catalytic cross-alkene metathesis with functional olefins under mild conditions to achieve approximately 36\% conversion of DHP into valuable long-chain building blocks with controlled product distribution. Comprehensive characterization of intermediates and products was performed using NMR, GC, GC-MS, GPC, and DSC. In the alkene cross-metathesis with methyl-10-undecenoate, the product distribution consisted of 23\% lower alkenes (C8-C14), 40\% unsaturated long-chain mono-esters (C12-C18), and 37\% unsaturated di-esters. In the case of 10-undecen-1-ol, the distribution included 20\% lower alkenes (C8-C11), 32\% unsaturated long-chain (C12-C18) mono-alcohols, and 48\% unsaturated di-alcohols. This strategy opens up new opportunities for converting waste polyethylene into high-value chemical intermediates, enabling resource recovery and delivering environmental benefits.</p>
},
	keywords = {depolymerization, functional olefins, Metathesis, Recycling, Value-added products},
	issn = {1060-1325},
	doi = {10.1080/10601325.2025.2533794},
	author = {Khopade, K. V. and Bodkhe, D. V. and Chikkali, S. H.}
}
