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Laboratory investigation demonstrates nucleophilic amine activation accelerates sulfur copolymerization at lower temperatures, suggesting versatile pathways for functional dynamic covalent polymers.
The accelerator effect of amine activators N-methylimidazole and 4-vinylaniline (4-VA) on inverse vulcanization and dynamic covalent polymerization (DCP) has been investigated. The sulfur polymer with self-activation comonomer 4-VA could also be used for low temperature DCP to incorporate some volatile monomers. Those approaches provide a new synthetic and rate accelerated processes to activate S8 for copolymerization processes with functional comonomers at lower temperatures and under a broader range of reaction conditions.
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Zhang et al. (2018) studied this question.
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