期刊
MACROMOLECULES
卷 56, 期 21, 页码 8565-8573出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.3c01400
关键词
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Bottlebrush networks designed as constitutional isomers were successfully synthesized and showed different mechanical properties depending on their kinetic chain lengths controlled by monomer-to-initiator ratio. The concept of network constitutional isomers was extended to include chain length dispersity through the choice of catalyst. The use of living polymerization chemistry to synthesize new networks, including network constitutional isomers, is expected to advance the development of next-generation materials significantly.
Bottlebrush networks designed to be constitutional isomers of each other were synthesized for the first time. These network constitutional isomers (NCIs) have significantly different mechanical properties depending on their kinetic chain lengths (R-K), which are controlled by the monomer-to-initiator ratio. Specifically, the low frequency moduli, yield behavior, elongation at break, and adhesive strength of these NCIs are different at the same cross-link densities. The NCI concept is extended to include R(K)s' dispersity through the choice of the catalyst. These NCIs highlight the impact of living polymerization chemistry on network formation. The use of living polymerization chemistry to synthesize new networks, including NCIs, is expected to significantly advance the development of next-generation materials.
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