Journal
CHEM
Volume 7, Issue 1, Pages 137-145Publisher
CELL PRESS
DOI: 10.1016/j.chempr.2020.11.020
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Funding
- Office of Science, U.S. Department of Energy [DE-AC02-05CH11231]
- NIH [R37 DE014193]
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This study reports a method for selectively catalytic oxidation of C-H bonds in polyethylenes with varying molecular weights and architectures, providing a new pathway for synthesizing functional and processable polyethylenes.
The synthesis of functional and processable polyethylenes from simple vinyl monomers with controlled molecular weights and architectures has been a grand challenge of polymer chemistry. Post-polymerization modification of the homopolymers of ethylene is attractive for this purpose but has been hampered by the lack of efficient methods for the selective functionalization of C-H bonds in polyolefins. We report the selective, catalytic oxidation of C-H bonds in commodity polyethylenes with varying molecular weights and architectures. Remarkably, the functionalized materials, even at low levels of functionalization, exhibit physical properties that are absent in unmodified polyolefins, such as strong adhesion and the ability to be painted with common waterborne latex paint. Such observations indicate that selectively modified polyethylenes as described here may help to transform existing commodity plastics into more valuable and potentially more sustainable materials.
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