Fluoride-Catalyzed Siloxane Exchange as a Robust Dynamic Chemistry for High-Performance Vitrimers

Tretbar, Chase; Castro, Jordan; Yokoyama, Kosuke; Guan, Zhibin

doi:10.1002/adma.202303280

Fluoride-Catalyzed Siloxane Exchange as a Robust Dynamic Chemistry for High-Performance Vitrimers

Journal Article · Tue May 16 04:00:00 EDT 2023 · Advanced Materials

DOI:https://doi.org/10.1002/adma.202303280· OSTI ID:2419022

Tretbar, Chase ^[1]; Castro, Jordan ^[2]; Yokoyama, Kosuke ^[2]; ^[2]

Univ. of California, Irvine, CA (United States); OSTI
Univ. of California, Irvine, CA (United States)

Sustainable development of new technologies requires materials having advanced physical and chemical properties while maintaining reprocessability and recyclability. Vitrimers are designed for this purpose; however, their dynamic covalent chemistries often have drawbacks or are limited to specialized polymers. Here, fluoride-catalyzed siloxane exchange is reported as an exceptionally robust chemistry for scalable production of high-performance vitrimers through industrial processing of commodity polymers such as poly(methyl methacrylate), polyethylene, and polypropylene. The vitrimers show improved resistance to creep, heat, oxidation, and hydrolysis, while maintaining excellent melt flow for processing and recycling. Furthermore, the siloxane exchange between different vitrimers during mechanical blending results in self-compatibilized blends without any compatibilizers. In conclusion, this offers a general, scalable method for producing sustainable high-performance vitrimers and a new strategy for recycling mixed plastic wastes.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of California, Irvine, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

Grant/Contract Number:: FG02-04ER46162

OSTI ID:: 2419022

Alternate ID(s):: OSTI ID: 1983500

Journal Information:: Advanced Materials, Journal Name: Advanced Materials Journal Issue: 28 Vol. 35; ISSN 0935-9648

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
dynamic covalent chemistry
fluoride
plastic recycling
siloxane exchange
vitrimers

Fluoride-Catalyzed Siloxane Exchange as a Robust Dynamic Chemistry for High-Performance Vitrimers

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