Synthesis of Polypropylene via Catalytic Deoxygenation of Poly(methyl acrylate)

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We propose the defunctionalization of vinyl polymers as a strategy to access previously inaccessible polyolefin materials. By utilizing B(C6F5)(3)-catalyzed deoxygenation in the presence of silane, we demonstrate that eliminating the pendent ester in poly(methyl acrylate) effectively leaves a linear hydrocarbon polymer with methyl pendants, which is polypropylene. We further show that a polypropylene-b-polystyrene diblock copolymer and a polystyrene-b-polypropylene-b-polystyrene triblock copolymer can be successfully derived from the poly(methyl acrylate)-containing block polymer precursors and exhibit quite distinct materials properties due to their chemical transformation. This unique postpolymerization modification methodology, which goes beyond the typical functional group conversion, can offer access to a diverse range of unprecedented polyolefin block polymers with a variable degree of functional groups.
Publisher
AMER CHEMICAL SOC
Issue Date
2019-09
Language
English
Article Type
Article
Citation

ACS MACRO LETTERS, v.8, no.9, pp.1172 - 1178

ISSN
2161-1653
DOI
10.1021/acsmacrolett.9b00522
URI
http://hdl.handle.net/10203/267990
Appears in Collection
CH-Journal Papers(저널논문)NT-Journal Papers(저널논문)
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